摘要
考察了ＨＺＳＭ－５型，Ｙ型沸石，超稳Ｙ（ＵＳＹ）沸石及β沸石４种催化剂对丙烯水合直接制备二异丙基醚的催化性能，确定了β沸石是丙烯水合直接制备二异丙基醚的最优良的催化剂。选用β沸石作催化剂，在适宜的条件下，丙烯的转化率可达５９．９５％，二异丙基醚的选择性为５３．０６％，异丙醇的选择性为４４．２６％；确定的最佳反应条件为反应温度１６２℃，压力７．５ＭＰａ，丙烯与水物质的量比１．８，重时空速０．１９ｈ－１。
Diisopropylether is a good oxygenante and octane improver for gasoline. Activities and selectivities of zeolites of HZSM 5, HY, HUSY and Hβ were investigated for hydration of propylene to prepare diisopropylether with a laboratory scale fixed reactor. Among the sezeolites, Hβ zeolites was proven to be the best for conversion of propylene to diisopropylether. At a proper reaction condition, the conversion of propylene is 59.95% with selectivities to DIPE of 53.06% and IPA of 44.26% over H β catalyst. Effects of reaction conditions such as temprature, pressure, propylene / water ratio of amount of substance and space velocity on activity and selectivity were studied over H β catalyst. The optimum reaction has been found out, which is 162 ℃, pressure 7.5 MPa, propylene / water ratio of amount of substance 1.8 and WHSV 0.19 h -1 for the H β catalyst.
出处
《大庆石油学院学报》
EI
CAS
北大核心
1997年第2期43-46,共4页
Journal of Daqing Petroleum Institute
关键词
沸石
水合
催化剂
丙烯
二异丙基醚
zeolites, hydration, catalyzer, propylene, diisopropylether, isopropanol, etherification
