文献类型：期刊文献

中文题名：Preparation of Novel Dechlorination Adsorbent and Study on Its Adsorption Mechanism

英文题名：Preparation of Novel Dechlorination Adsorbent and Study on Its Adsorption Mechanism

作者：Chen Jiqun[1];Zhao Xiaojun[1];Zou Ying[1]

机构：[1]East China Univ Sci & Technol, Petr Proc Inst, Shanghai 200237, Peoples R China

年份：2017

卷号：19

期号：4

起止页码：20

中文期刊名：China Petroleum Processing & Petrochemical Technology

外文期刊名：CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY

收录：;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000419946300006)】；

语种：英文

中文关键词：organic;chlorine;adsorption;13X;molecular;sieve;metal;modification;Ag

外文关键词：organic chlorine; adsorption; 13X molecular sieve; metal modification; Ag

摘要：The preparation of novel dechlorination adsorbent by using the modified 13 X molecular sieve and its adsorption mechanism were studied. XRD and SEM analyses showed that the Ag-13 X molecular sieve revealed a new crystal plane,while other molecular sieve samples more or less contained some impurities. The BET data showed that only Ag^+ ions could enlarge the pore size and the pore volume at the same time. The NH_3-TPD diagram showed that the acid sites of the adsorbent increased after its modification by metal ions and only the Ag-13 X molecular sieve generated new medium strong acid sites. According to adsorption experiments conducted at different concentration and temperature, the dechlorination adsorption mechanism of Ag-13 X molecular sieve was a combination of physical adsorption and chemical adsorption which showed the different degree of influence at different temperatures.
The preparation of novel dechlorination adsorbent by using the modified 13X molecular sieve and its adsorption mechanism were studied. XRD and SEM analyses showed that the Ag-13X molecular sieve revealed a new crystal plane, while other molecular sieve samples more or less contained some impurities. The BET data showed that only Ag+ ions could enlarge the pore size and the pore volume at the same time. The NH3-TPD diagram showed that the acid sites of the adsorbent increased after its modification by metal ions and only the Ag-13X molecular sieve generated new medium strong acid sites. According to adsorption experiments conducted at different concentration and temperature, the dechlorination adsorption mechanism of Ag-13X molecular sieve was a combination of physical adsorption and chemical adsorption which showed the different degree of influence at different temperatures.