Hydrothermal Synthesis of Clinoptilolite and Its Ion Exchange Performance for CH4/N2 Separation - 文章详情页

作者：

Peng, Shenlai (Peng, Shenlai.) | Ullah, Raza (Ullah, Raza.) | Bai, Shiyang (Bai, Shiyang.) | Sun, Jihong (Sun, Jihong.) (学者：孙继红) | Wu, Xia (Wu, Xia.)

收录：

EI PKU CSCD

摘要：

Clinoptilolite　was　synthesized　via　hydrothermal　method　using　aluminum　hydroxide　as　aluminum　source　and　silica　sol　(Ludox)　as　silicon　source.　The　influences　of　synthesized　parameters　(i.e.,　molar　ratio　of　n(OH-)/n(Si),　crystallization　time　and　crystallization　temperature,　etc.)　on　the　structure　of　prepared　clinoptilolite　and　its　CH4/N2　separation　performance　were　investigated　by　various　characterization　techniques,　including　XRD,　TEM,　BET,　FT-IR,　TG,　29Si-NMR.　Particularly,　the　kinetic　behaviors　of　crystallization　rate　were　evaluated,　and　the　apparent　activation　energies　for　induction　and　growth　period　according　to　Arrhenius　equation　are　91.5　and　7.2　kJ/mol,　respectively.　Meanwhile,　Ca2+　and　K+　clinoptilolites　were　prepared　through　water　solution　ion　exchange　method.　Moreover,　the　CH4/N2　separation　performance　was　also　evaluated　for　clinoptilolites　with/without　ion　exchange.　Experimental　results　suggest　that　equilibrium　selectivity　of　CH4/N2　is　strongly　depended　on　the　type　of　exchanged　cationic　charge,　its　quantity　and　distribution　in　the　skeleton.　K-clinoptilolite　exhibited　a　good　separation　performance,　and　could　be　a　promising　absorbent　for　coal　bed　methane　recovery.　©　2019,　Editorial　Office　of　Acta　Petrolei　Sinica(Petroleum　Processing　Section).　All　right　reserved.

关键词：

Coal deposits Zeolites Ions Activation energy Silicon Sols Hydrothermal synthesis Molar ratio Silica Ion exchange Methane Coal bed methane Separation Metal recovery Aluminum hydroxide

作者机构：

[ 1 ] [Peng, Shenlai]Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Ullah, Raza]Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Bai, Shiyang]Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Sun, Jihong]Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Wu, Xia]Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

孙继红
[sun, jihong]beijing key laboratory for green catalysis and separation, college of environmental and energy engineering, beijing university of technology, beijing; 100124, china

电子邮件地址：

jhsun@bjut.edu.cn

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