Isobutene catalyst prepared from alcohol solution treated methyl bromide and preparation method and application of isobutene catalyst

• Main Authors: ZHANG SHUDONG, ZHANG XIWEN, SUN XIAODAN, LI JIE, LIU JIHUA, ZHANG XINWEI, NI XIANGQIAN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• 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 invention discloses an isobutene catalyst prepared from alcohol solution treated methyl bromide and a preparation method and application of the isobutene catalyst. The preparation method comprises the following steps that firstly, zinc oxide or zinc oxide and zirconia are introduced into a silicon dioxide carrier; secondly, the material obtained in the first step is treated through an alcohol water solution; thirdly, the catalyst precursor obtained in the second step is subjected to bromination treatment, the content, by weight, of the zinc oxide in the prepared catalyst is 0.5-20%, and the content, by weight, of zinc bromide is 10-50%. The catalyst can remarkably improve the selectivity of isobutene. 本发明公开种醇类溶液处理的溴甲烷制异丁烯催化剂及其制备方法和应用。所述制备方法包括如下过程：（1）将氧化锌或者氧化锌和氧化锆引入至二氧化硅载体；（2）使用醇类水溶液处理步骤（1）得到的物料；（3）对步骤（2）所得催化剂前体进行溴化处理，制备的催化剂中氧化锌重量含量为0.5%-20%；溴化锌重量含量为10%-50%。该催化剂能够显著提高异丁烯的选择性。