{"id":46,"date":"2021-09-06T14:43:20","date_gmt":"2021-09-06T18:43:20","guid":{"rendered":"https:\/\/sites.nd.edu\/andy-wang\/?page_id=46"},"modified":"2021-10-03T13:59:19","modified_gmt":"2021-10-03T17:59:19","slug":"zeolite-membrane-separation","status":"publish","type":"page","link":"https:\/\/sites.nd.edu\/andy-wang\/zeolite-membrane-separation\/","title":{"rendered":"Separations Using Zeolite Membranes"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM-1024x283.png\" alt=\"\" class=\"wp-image-206\" width=\"840\" height=\"232\" srcset=\"https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM-1024x283.png 1024w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM-300x83.png 300w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM-768x212.png 768w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM-1536x424.png 1536w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/Screen-Shot-2021-09-22-at-3.45.29-PM.png 1906w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/figure>\n\n\n\n<p>Membranes have been used to separate alcohol-water solutions (including azeotropic) and have proved to be energy and cost efficient over other methods. However, the membrane separation is often accompanied with poor performance, where molecular modeling is the perfect tool to elucidate insights and provide guidance on improvement. <\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/1-s2.0-S0376738817300819-gr7.jpg\" alt=\"\" class=\"wp-image-85\" width=\"565\" height=\"833\" srcset=\"https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/1-s2.0-S0376738817300819-gr7.jpg 565w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/1-s2.0-S0376738817300819-gr7-203x300.jpg 203w\" sizes=\"auto, (max-width: 565px) 100vw, 565px\" \/><\/figure><\/div>\n\n\n\n<p>Why does the separation efficiency for isopropanol decrease at low water concentrations in the feed? Our simulation results revealed that the water molecules at the higher water concentrations gathered around and inside the defect pores on the zeolite membrane, which stopped the isopropanol from going through the membrane and had a positive effect on separation. At lower water concentrations there are not enough water molecules at equilibrium near or inside the defects to block these pores for possible IPA penetration.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/ange201909544-fig-0004-m-1024x945.jpg\" alt=\"\" class=\"wp-image-86\" width=\"638\" height=\"589\" srcset=\"https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/ange201909544-fig-0004-m-1024x945.jpg 1024w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/ange201909544-fig-0004-m-300x277.jpg 300w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/ange201909544-fig-0004-m-768x709.jpg 768w, https:\/\/sites.nd.edu\/andy-wang\/files\/2021\/09\/ange201909544-fig-0004-m.jpg 1034w\" sizes=\"auto, (max-width: 638px) 100vw, 638px\" \/><\/figure><\/div>\n\n\n\n<p>In the separation of CO<sub>2<\/sub>\/Xe mixtures using DD3R zeolites, our simulations showed the adsorbed Xe atoms stayed on the surface cages and acted as a barrier for the adsorption and diffusion of CO<sub>2<\/sub>, leading to a lower diffusion rate of CO<sub>2<\/sub>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Membranes have been used to separate alcohol-water solutions (including azeotropic) and have proved to be energy and cost efficient over other methods. However, the membrane separation is often accompanied with poor performance, where molecular modeling is the perfect tool to elucidate insights and provide guidance on improvement. Why does the separation efficiency for isopropanol decrease [&hellip;]<\/p>\n","protected":false},"author":4026,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-46","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/pages\/46","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/users\/4026"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/comments?post=46"}],"version-history":[{"count":9,"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/pages\/46\/revisions"}],"predecessor-version":[{"id":363,"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/pages\/46\/revisions\/363"}],"wp:attachment":[{"href":"https:\/\/sites.nd.edu\/andy-wang\/wp-json\/wp\/v2\/media?parent=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}