Main Factors Affecting Gas Phase Adsorption of Activated Carbon

{"news_id":9074,"is_preview":0,"news_info":{"id":9074,"company_id":176,"user_id":411,"author":"","website_id":781,"pub_date":"2024-09-05 15:15:04","urla":"gas-phase-adsorption-activated-carbon","description":"This article mainly discusses the key factors affecting gas phase adsorption of activated carbon.","image_url":"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0319\/2146\/65f9475284a71\/ACarbon%C2%AE-Activated-Carbon-Products.webp","image_alt":"ACarbon\u00ae-Activated-Carbon-Products","title":"Main Factors Affecting Gas Phase Adsorption of Activated Carbon","content":"<h1 style=\"line-height: 1.75;\"><strong><span style=\"color: #000000;\">Main Factors Affecting Gas Phase Adsorption of Activated Carbon<\/span><\/strong><\/h1>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">Activated carbon can be utilized for both liquid phase and gas phase adsorption, with different factors influencing each type. This article mainly discusses the key factors affecting gas phase adsorption of activated carbon.<\/span><\/p>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">When a substance undergoes vaporization, transitioning from liquid to gas, its volume expands significantly. Once vaporized, the substance is adsorbed onto activated carbon, where its volume contracts and nearly equals that of its liquid state. Therefore, adsorption can be seen as a phenomenon similar to liquefaction, which is the reverse process of vaporization. The factors influencing liquefaction similarly affect adsorption.<\/span><\/p>\n<hr \/>\n<h2 style=\"line-height: 1.75;\"><span style=\"font-size: 18pt;\"><strong><span style=\"color: #045e14;\">Key Factors Influencing Gas Phase Adsorption<\/span><\/strong><\/span><\/h2>\n<h3 style=\"line-height: 1.75;\"><span style=\"font-size: 14pt;\"><strong><span style=\"color: #000000;\">1. Temperature of the Adsorption System<\/span><\/strong><\/span><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">The thermal motion of gas molecules is influenced by temperature. When the temperature is high, the kinetic energy of gas molecules increases, causing them to move faster, which is unfavorable for adsorption by activated carbon. Conversely, lower temperatures promote adsorption. This pattern applies to reversible physical adsorption, while in irreversible chemical adsorption, higher temperatures accelerate the chemical reaction rate, creating an inverse relationship. Generally, physical adsorption is more common in gas phase adsorption, with chemical adsorption being less prevalent.<\/span><\/p>\n<h3 style=\"line-height: 1.75;\"><span style=\"font-size: 14pt;\"><strong><span style=\"color: #000000;\">2. Boiling Point and Critical Temperature of the Adsorbate<\/span><\/strong><\/span><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">Substances with higher boiling points and critical temperatures tend to be easier to adsorb. As these values increase, the adsorption capacity of activated carbon also rises.<\/span><\/p>\n<h3 style=\"line-height: 1.75;\"><span style=\"font-size: 14pt;\"><strong><span style=\"color: #000000;\">3. Pressure of the Adsorbate<\/span><\/strong><\/span><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">Higher relative pressure of the adsorbate leads to increased adsorption capacity, while lower pressure results in reduced capacity. The pressure of the adsorbate directly impacts the amount adsorbed onto activated carbon. However, at the same relative pressure, the adsorption capacity of activated carbon for different adsorbates varies based on their properties.<\/span><\/p>\n<h3 style=\"line-height: 1.75;\"><span style=\"font-size: 14pt;\"><strong><span style=\"color: #000000;\">4. Size of Adsorbate Molecules<\/span><\/strong><\/span><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">When the pressure of the adsorbate is relatively low, activated carbon's adsorption capacity for organic compounds from the same group tends to increase with molecular weight. For example, when the pressure is less than 0.13 kPa, activated carbon's adsorption capacity for ethers follows this order: dipropyl ether &gt; diethyl ether &gt; dimethyl ether. However, at higher pressures, this order shifts to dimethyl ether &gt; diethyl ether &gt; dipropyl ether.<\/span><\/p>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">It is also essential to note that the adsorption quantity may vary depending on whether it is expressed in terms of mass or moles. For instance, when expressed in grams, activated carbon adsorbs more carbon tetrachloride than chloroform; but when expressed in moles, their adsorption quantities are almost equal.<\/span><\/p>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">Additionally, the influence of adsorbate molecule size on adsorption can vary based on the pore size distribution and type of activated carbon. Therefore, in practical applications, it is crucial to select the appropriate type of activated carbon based on the size of the adsorbate molecules.<\/span><\/p>\n<h3 style=\"line-height: 1.75;\"><span style=\"font-size: 14pt;\"><strong><span style=\"color: #000000;\">5. Coexistence of Multiple Adsorbates<\/span><\/strong><\/span><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">When activated carbon adsorbs a mixture of gases, the component with the highest adsorption capacity when present alone will still dominate in the mixture, and vice versa. However, the adsorption capacity of activated carbon for a specific component in a mixed gas is usually lower than when that component is present alone.<\/span><\/p>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">In practical adsorption systems, mixed gases are often encountered. If the adsorption capacity for one component is very low, it can be ignored. For example, when using activated carbon at room temperature to recover organic solvents from air, the adsorption of air can typically be disregarded.<\/span><\/p>\n<hr \/>\n<h3 style=\"line-height: 1.75;\"><strong><span style=\"color: #045e14;\">Optimizing Activated Carbon for Maximum Performance<\/span><\/strong><\/h3>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">These are the five main factors that influence the gas phase adsorption of activated carbon. In practical applications, selecting the right type of activated carbon and adjusting certain influencing factors according to the actual situation can help achieve optimal treatment results. This will enable activated carbon to be used more effectively, maximizing its value in different applications.<\/span><\/p>\n<p style=\"line-height: 1.75;\">&nbsp;<\/p>\n<p style=\"line-height: 1.75;\"><span style=\"color: #000000;\">For a deeper understanding of&nbsp; adsorption, check out our article on :<\/span><\/p>\n<ul>\n<li style=\"line-height: 1.75;\"><span style=\"color: #000000;\"><a href=\"\/adsorption-properties-activated-carbon\" target=\"_blank\" rel=\"noopener\" data-page_id=\"9073\" data-page_name=\"Adsorption Properties of Activated Carbon\" data-page_type=\"blogPage\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\">&nbsp;Adsorption of Activated Carbon<\/span><\/span><\/a><\/span><\/li>\n<li style=\"line-height: 1.75;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/www.allcarbon.com.cn\/activated-carbon-in-pressure-swing-adsorption-efficient-gas-separation-and-purification\" target=\"_blank\" rel=\"noopener\">Activated Carbon in Pressure Swing Adsorption: Efficient Gas Separation and Purification<\/a><\/span><\/span><\/li>\n<li style=\"line-height: 1.75;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/www.allcarbon.com.cn\/nitric-acid-modified-activated-carbon-for-metal-ions-adsorption\" target=\"_blank\" rel=\"noopener\">Nitric Acid Modified Activated Carbon for Metal Ions Adsorption<\/a><\/span><\/span><\/li>\n<\/ul>\n<p>For more information on other types of activated carbon:<\/p>\n<ul>\n<li style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/bamboo-based-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"19595\" data-page_name=\"Bamboo Based Activated Carbon\uff5cACC\" data-page_type=\"menuPage\">Bamboo Based Activated Carbon<\/a><\/span><\/span><\/li>\n<li style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/wood-based-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"19594\" data-page_name=\"Wood Based Activated Carbon\uff5cACC\" data-page_type=\"menuPage\">Wood Based Activated Carbon<\/a><\/span><\/span><\/li>\n<li style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/coconut-shell-based-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"19605\" data-page_name=\"Coconut Shell Based Activated Carbon\uff5cACC\" data-page_type=\"menuPage\">Coconut Shell Based Activated Carbon<\/a><\/span><\/span><\/li>\n<li style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/precious-metal-carrier-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"19582\" data-page_name=\"Precious Metal Carrier Activated Carbon\uff5cACC\" data-page_type=\"menuPage\">Precious Metal Carrier Activated Carbon<\/a><\/span><\/span><\/li>\n<li style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\"><a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/spherical-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"19576\" data-page_name=\"Spherical Activated Carbon\uff5cACC\" data-page_type=\"menuPage\">Spherical Activated Carbon<\/a><\/span><\/span><\/li>\n<li>\n<div class=\"menu-text \" style=\"line-height: 1.6;\"><span style=\"text-decoration: underline;\"><span style=\"color: #236fa1; text-decoration: underline;\">--<a style=\"color: #236fa1; text-decoration: underline;\" href=\"https:\/\/ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn\/resin-based-spherical-activated-carbon?is_preview=1\" target=\"_blank\" rel=\"noopener\" data-page_id=\"21460\" data-page_name=\"Resin Based Spherical Activated Carbon\" data-page_type=\"menuPage\">Resin Based Spherical Activated Carbon<\/a><\/span><\/span><\/div>\n<\/li>\n<\/ul>\n<p style=\"line-height: 1.75;\">&nbsp;<\/p>","discuss":0,"seo_title":"Main Factors Affecting Gas Phase Adsorption of Activated Carbon","seo_keyword":"Gas Phase Adsorption, Activated Carbon, Adsorption Factors,How Temperature Affects Gas Phase Adsorption, Best Activated Carbon for Adsorption, Adsorption Capacity for Mixed Gases","seo_describe":"Discover the 5 key factors affecting gas phase adsorption of activated carbon, including temperature, pressure, molecular size, and more. Optimize your applications for best results","track_code":"","viewer":"","source_copy_id":0,"sort":15,"status":0,"data_time":"2024-09-05 15:15:04","create_time":"2024-09-05 14:59:52","update_time":"2025-04-02 09:56:43","type_items":[{"id":2083,"website_id":781,"name":"Activated Carbon","urla":""}],"tag_items":[]}}

<h1 style="line-height: 1.75;"><strong><span style="color: #000000;">Main Factors Affecting Gas Phase Adsorption of Activated Carbon</span></strong></h1>
<p style="line-height: 1.75;"><span style="color: #000000;">Activated carbon can be utilized for both liquid phase and gas phase adsorption, with different factors influencing each type. This article mainly discusses the key factors affecting gas phase adsorption of activated carbon.</span></p>
<p style="line-height: 1.75;"><span style="color: #000000;">When a substance undergoes vaporization, transitioning from liquid to gas, its volume expands significantly. Once vaporized, the substance is adsorbed onto activated carbon, where its volume contracts and nearly equals that of its liquid state. Therefore, adsorption can be seen as a phenomenon similar to liquefaction, which is the reverse process of vaporization. The factors influencing liquefaction similarly affect adsorption.</span></p>
<hr />
<h2 style="line-height: 1.75;"><span style="font-size: 18pt;"><strong><span style="color: #045e14;">Key Factors Influencing Gas Phase Adsorption</span></strong></span></h2>
<h3 style="line-height: 1.75;"><span style="font-size: 14pt;"><strong><span style="color: #000000;">1. Temperature of the Adsorption System</span></strong></span></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">The thermal motion of gas molecules is influenced by temperature. When the temperature is high, the kinetic energy of gas molecules increases, causing them to move faster, which is unfavorable for adsorption by activated carbon. Conversely, lower temperatures promote adsorption. This pattern applies to reversible physical adsorption, while in irreversible chemical adsorption, higher temperatures accelerate the chemical reaction rate, creating an inverse relationship. Generally, physical adsorption is more common in gas phase adsorption, with chemical adsorption being less prevalent.</span></p>
<h3 style="line-height: 1.75;"><span style="font-size: 14pt;"><strong><span style="color: #000000;">2. Boiling Point and Critical Temperature of the Adsorbate</span></strong></span></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">Substances with higher boiling points and critical temperatures tend to be easier to adsorb. As these values increase, the adsorption capacity of activated carbon also rises.</span></p>
<h3 style="line-height: 1.75;"><span style="font-size: 14pt;"><strong><span style="color: #000000;">3. Pressure of the Adsorbate</span></strong></span></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">Higher relative pressure of the adsorbate leads to increased adsorption capacity, while lower pressure results in reduced capacity. The pressure of the adsorbate directly impacts the amount adsorbed onto activated carbon. However, at the same relative pressure, the adsorption capacity of activated carbon for different adsorbates varies based on their properties.</span></p>
<h3 style="line-height: 1.75;"><span style="font-size: 14pt;"><strong><span style="color: #000000;">4. Size of Adsorbate Molecules</span></strong></span></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">When the pressure of the adsorbate is relatively low, activated carbon's adsorption capacity for organic compounds from the same group tends to increase with molecular weight. For example, when the pressure is less than 0.13 kPa, activated carbon's adsorption capacity for ethers follows this order: dipropyl ether > diethyl ether > dimethyl ether. However, at higher pressures, this order shifts to dimethyl ether > diethyl ether > dipropyl ether.</span></p>
<p style="line-height: 1.75;"><span style="color: #000000;">It is also essential to note that the adsorption quantity may vary depending on whether it is expressed in terms of mass or moles. For instance, when expressed in grams, activated carbon adsorbs more carbon tetrachloride than chloroform; but when expressed in moles, their adsorption quantities are almost equal.</span></p>
<p style="line-height: 1.75;"><span style="color: #000000;">Additionally, the influence of adsorbate molecule size on adsorption can vary based on the pore size distribution and type of activated carbon. Therefore, in practical applications, it is crucial to select the appropriate type of activated carbon based on the size of the adsorbate molecules.</span></p>
<h3 style="line-height: 1.75;"><span style="font-size: 14pt;"><strong><span style="color: #000000;">5. Coexistence of Multiple Adsorbates</span></strong></span></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">When activated carbon adsorbs a mixture of gases, the component with the highest adsorption capacity when present alone will still dominate in the mixture, and vice versa. However, the adsorption capacity of activated carbon for a specific component in a mixed gas is usually lower than when that component is present alone.</span></p>
<p style="line-height: 1.75;"><span style="color: #000000;">In practical adsorption systems, mixed gases are often encountered. If the adsorption capacity for one component is very low, it can be ignored. For example, when using activated carbon at room temperature to recover organic solvents from air, the adsorption of air can typically be disregarded.</span></p>
<hr />
<h3 style="line-height: 1.75;"><strong><span style="color: #045e14;">Optimizing Activated Carbon for Maximum Performance</span></strong></h3>
<p style="line-height: 1.75;"><span style="color: #000000;">These are the five main factors that influence the gas phase adsorption of activated carbon. In practical applications, selecting the right type of activated carbon and adjusting certain influencing factors according to the actual situation can help achieve optimal treatment results. This will enable activated carbon to be used more effectively, maximizing its value in different applications.</span></p>
<p style="line-height: 1.75;"> </p>
<p style="line-height: 1.75;"><span style="color: #000000;">For a deeper understanding of  adsorption, check out our article on :</span></p>
<ul>
<li style="line-height: 1.75;"><span style="color: #000000;"><a href="/adsorption-properties-activated-carbon" target="_blank" rel="noopener" data-page_id="9073" data-page_name="Adsorption Properties of Activated Carbon" data-page_type="blogPage"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"> Adsorption of Activated Carbon</span></span></a></span></li>
<li style="line-height: 1.75;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://www.allcarbon.com.cn/activated-carbon-in-pressure-swing-adsorption-efficient-gas-separation-and-purification" target="_blank" rel="noopener">Activated Carbon in Pressure Swing Adsorption: Efficient Gas Separation and Purification</a></span></span></li>
<li style="line-height: 1.75;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://www.allcarbon.com.cn/nitric-acid-modified-activated-carbon-for-metal-ions-adsorption" target="_blank" rel="noopener">Nitric Acid Modified Activated Carbon for Metal Ions Adsorption</a></span></span></li>
</ul>
<p>For more information on other types of activated carbon:</p>
<ul>
<li style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/bamboo-based-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="19595" data-page_name="Bamboo Based Activated Carbon｜ACC" data-page_type="menuPage">Bamboo Based Activated Carbon</a></span></span></li>
<li style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/wood-based-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="19594" data-page_name="Wood Based Activated Carbon｜ACC" data-page_type="menuPage">Wood Based Activated Carbon</a></span></span></li>
<li style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/coconut-shell-based-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="19605" data-page_name="Coconut Shell Based Activated Carbon｜ACC" data-page_type="menuPage">Coconut Shell Based Activated Carbon</a></span></span></li>
<li style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/precious-metal-carrier-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="19582" data-page_name="Precious Metal Carrier Activated Carbon｜ACC" data-page_type="menuPage">Precious Metal Carrier Activated Carbon</a></span></span></li>
<li style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;"><a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/spherical-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="19576" data-page_name="Spherical Activated Carbon｜ACC" data-page_type="menuPage">Spherical Activated Carbon</a></span></span></li>
<li>
<div class="menu-text " style="line-height: 1.6;"><span style="text-decoration: underline;"><span style="color: #236fa1; text-decoration: underline;">--<a style="color: #236fa1; text-decoration: underline;" href="https://ndnvdwv4agliaxrpb243ode.web.us01.matchpages.cn/resin-based-spherical-activated-carbon?is_preview=1" target="_blank" rel="noopener" data-page_id="21460" data-page_name="Resin Based Spherical Activated Carbon" data-page_type="menuPage">Resin Based Spherical Activated Carbon</a></span></span></div>
</li>
</ul>
<p style="line-height: 1.75;"> </p>