不同硅铝比丝光沸石上二甲醚羰基化反应的积炭研究  

Study on coke deposition in carbonylation of dimethyl ether over mordenite with different SiO_(2)/Al2O_(3) ratios

作　　者：王晓胜[1] 刘少铎 杨韬 李然家[1] 余长春[1] 李晓娇 刘毓翔 WANG Xiao-sheng;LIU Shao-duo;YANG Tao;LI Ran-jia;YU Chang-chun;LI Xiao-jiao;LIU Yu-xiang(College of New Energy and Material,China University of Petroleum-Beijing,Beijing 102249,China;School of Economics and Management,China University of Petroleum-Beijing,Beijing 102249,China;Refining Division,Sinopec Group,Beijing 100010,China;College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]中国石油大学(北京)新能源与材料学院,北京102249 [2]中国石油大学(北京)经济管理学院,北京102249 [3]中国石油化工集团炼油事业部,北京100010 [4]青岛科技大学化工学院,山东青岛266042

出　　处：《现代化工》2022年第9期109-113,共5页Modern Chemical Industry

基　　金：国家自然科学基金(22008260);中国石油大学(北京)科研基金资助(2462021YJRC011)。

摘　　要：制备了不同SiO_(2)/Al_(2)O_(3)摩尔比的丝光沸石分子筛(MOR),对其二甲醚羰基化反应活性进行了评价,并对反应后催化剂上的积炭进行了表征。结果表明,随着SiO_(2)/Al_(2)O_(3)摩尔比的提高,MOR催化剂上羰基化反应诱导期逐渐缩短,二甲醚(DME)转化率逐渐升高,但单程寿命并未随硅铝摩尔比提高而有较大改变。适当提高硅铝摩尔比有助于降低传质阻力、提高MOR催化剂的羰基化反应活性。反应后MOR催化剂上的积炭量整体与催化剂的反应活性呈正相关,即硅铝摩尔比提高后催化剂上的积炭量较多、积炭的氢碳比较低。A series of mordenite(MOR)with different SiO_(2)/Al_(2)O_(3) ratios are prepared,their activity in the carbonylation of dimethyl ether(DME)is evaluated,and the coke deposits formed on the catalyst during the reaction process are characterized.Test results indicate that with the increase of SiO_(2)/Al_(2)O_(3) ratio,the induction period of the carbonylation reaction is gradually shortened and DME conversion increases gradually.However,the single-pass lifespan of catalyst does not change with the increase of SiO_(2)/Al_(2)O_(3) ratio.Suitable increase of SiO_(2)/Al_(2)O_(3) ratio is conducive to reduce resistance in mass transfer,and helps the catalyst to improve the carbonylation performance.The coke deposition amount on the MOR catalyst after the reaction is positively correlated with the reaction activity of the catalyst as a whole,i.e.,more coke deposition will be formed over the catalyst with higher SiO_(2)/Al_(2)O_(3) ratio.

关 键 词：丝光沸石 羰基化 二甲醚 硅铝比 积炭 

分 类 号：TE646[石油与天然气工程—油气加工工程]