采用Hβ沸石为载体,以Ni为主剂,分别以P、Mg、La为助剂合成了FCC汽油加氢改质双功能催化剂。考察了采用不同热处理方式脱模板剂对Naβ沸石载体的影响,以及助剂种类和助剂含量对双功能催化剂性能的影响。结果表明,采用阶段焙烧法脱模板...采用Hβ沸石为载体,以Ni为主剂,分别以P、Mg、La为助剂合成了FCC汽油加氢改质双功能催化剂。考察了采用不同热处理方式脱模板剂对Naβ沸石载体的影响,以及助剂种类和助剂含量对双功能催化剂性能的影响。结果表明,采用阶段焙烧法脱模板剂可以有效的抑制分子筛脱铝,更好的保持分子筛原始结晶态和比表面积;在FCC汽油加氢改质反应中,加入0.25%磷改性后的Ni P β催化剂,有效的降低了汽油中的烯烃含量,使烯烃转化率达到65%,并保证汽油的辛烷值基本不降低。展开更多
The catalytic activities of some solid acid catalysts, H β , HZSM 5 and HY zeolites, in the esterification of benzyl alcohol with acetic acid were investigated as functions of the molar ratio of benzyl alcohol to ace...The catalytic activities of some solid acid catalysts, H β , HZSM 5 and HY zeolites, in the esterification of benzyl alcohol with acetic acid were investigated as functions of the molar ratio of benzyl alcohol to acetic acid, the feed amount of H β zeolite, and reaction temperature and time. A maximum yield of benzyl acetate in 70% was obtained under certain reaction conditions. The H β zeolite could be used repeatedly at least 5 times after regeneration.展开更多
文摘采用Hβ沸石为载体,以Ni为主剂,分别以P、Mg、La为助剂合成了FCC汽油加氢改质双功能催化剂。考察了采用不同热处理方式脱模板剂对Naβ沸石载体的影响,以及助剂种类和助剂含量对双功能催化剂性能的影响。结果表明,采用阶段焙烧法脱模板剂可以有效的抑制分子筛脱铝,更好的保持分子筛原始结晶态和比表面积;在FCC汽油加氢改质反应中,加入0.25%磷改性后的Ni P β催化剂,有效的降低了汽油中的烯烃含量,使烯烃转化率达到65%,并保证汽油的辛烷值基本不降低。
文摘The catalytic activities of some solid acid catalysts, H β , HZSM 5 and HY zeolites, in the esterification of benzyl alcohol with acetic acid were investigated as functions of the molar ratio of benzyl alcohol to acetic acid, the feed amount of H β zeolite, and reaction temperature and time. A maximum yield of benzyl acetate in 70% was obtained under certain reaction conditions. The H β zeolite could be used repeatedly at least 5 times after regeneration.
