A novel study of sulfur-absorption via samarium-doped cerium sorbent at high temperature  

作　　者：Xuechao Hu Junhui Dong 

机构地区：[1] School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China [2] Inner Mongolia Power Research Institute,Hohhot 010020,China [3] Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating,Hohhot 010051,China

出　　处：《Journal of Rare Earths》2020年第6期617-624,共8页稀土学报（英文版）

基　　金：the National Natural Science Foundation of China(51502147);Inner Mongolia Autonomous Region Doctoral Innovation Project(B20171012804Z)。

摘　　要：Sulfides existing in many gas mixtures of high temperature cases have a negative effect on various industrial applications.In this study,we present samarium-doped cerium(SDC) sorbent to remove H2 S at high temperature.Compared with pure CeO2,the SDC sorbent shows excellent ability in sulfur removal because of the positive effect of the doping of Sm.The H2 has a negative influence on sulfidation of the SDC sorbent and significantly shortens the breakthrough time,hence breakthrough sulfur capacity(BSC).The carbon monoxide present in the feed gas has no obvious effect on the sulfur-removal performance,A suitable samarium loading in SDC leads to an optimum interaction between metal oxide species and the surface oxygen vacancies,which results in an optimal adsorbed activity of reduced gas(H2,H2 S) and hence desulphurization performance.In addition,the SDC sorbents have a good regenerated ability by a simple calcination process.

关 键 词：SORBENT Rare earth DESULPHURIZATION Sulfur capacity 

分 类 号：X701[环境科学与工程—环境工程] TQ424[化学工程]