Preparation of a highly efficient Pt/USY catalyst for hydrogenation and selective ring-opening reaction of tetralin

• 来源期刊: 石油科学（英文版）
• 年，卷（期）: 2018,（3）
• 页码范围: 605-612
• 页数: 8页
• 语种: 英文

摘要

Ultrastable Y zeolite (USY)-supported Pt catalyst was prepared by gas-bubbling-assisted membrane reduction.The influence of reaction conditions and the metal and acid sites of catalysts on the catalytic performance of catalyst in hydrogenation and selective ring opening of tetralin,1,2,3,4-tetrahydronaphthalene (THN),was studied.It was found that the optimal reaction conditions were at a temperature of 280 ℃,hydrogen pressure of 4 MPa,liquid hourly space velocity of 2 h-1 and H2/THN ratio of 750.Under these optimal conditions,a high conversion of almost 100％ was achieved on the 0.3Pt/USY catalyst.XRD patterns and TEM images revealed that Pt particles were highly dispersed on the USY,favorable to the hydrogenation reaction of tetralin.Ammonia temperature-programmed desorption and Py-IR results indicated that the introduction of Pt can reduce the acid sites of USY,particularly the strong acid sites of USY.Thus,the hydrocracking reaction can be suppressed.