Alkyl aromatic hydrocarbon dehydrogenation catalyst

• Main Authors: MIAO CHANGXI, SONG LEI, ZHANG XINYU, XU YONGFAN, ZHU MIN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention relates to an alkyl aromatic hydrocarbon dehydrogenation catalyst and a preparation method thereof A purpose of the present invention is mainly to solve the problems of low selectivity and high by-product toluene of the low potassium catalyst in the prior art. The technical scheme of the present invention comprises that the alkyl aromatic hydrocarbon dehydrogenation catalyst comprises, by weight, 65-77% of Fe2O3, 6-11% of K2O, 6-10% of CeO2, 0.5-5% of WO3, 0.5-5% of SrO, 0.5-5% of V2O5, and 0.5-5% of a medium rare earth oxide, wherein the medium rare earth oxide is at least one selected from Sm2O3, Eu2O3 and Gd2O3. With the technical scheme, the problems in the prior art are well solved. The alkyl aromatic hydrocarbon dehydrogenation catalyst of the present invention can be used for the alkyl alkenyl aromatic hydrocarbon preparation through alkyl aromatic hydrocarbon dehydrogenation in the industrial production. 本发明涉及烷基芳烃脱氢的催化剂及其制备方法，主要解决以往技术中存在的低钾催化剂选择性低、副产甲苯高的问题。本发明通过采用烷基芳烃脱氢的催化剂，以重量百分