Preparation method of selective hydrogenation catalyst

• Main Authors: SHEN GANG, HU XUEWU, ZHONG JIAN, YIN XIPING, ZHANG YONG, YIN ZHE, SHI QINZHI, ZHANG NAN, ZHENG JIANPO, NI MING, SU HAIXIA, CHENG HAO, SHI JIANGONG, REN JING, WANG XIAOJING, YI HONGLIANG, LIU ZHIJIAN, YANG LIU, WANG HEPENG
• Format: Patent
• Language: Chinese; English
• Published: 21.06.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention relates to the field of olefin selective hydrogenation catalyst preparation, and discloses a selective hydrogenation catalyst preparation method, which comprises: 1) carrying out first contact on PVP and a catalyst carrier in the presence of a solvent to obtain a modified carrier at least partially covered with PVP on the surface of the catalyst carrier; (2) carrying out second contact on the modified carrier obtained in the step (1) and a solution containing a first active component and a second active component to obtain a carrier after the second contact; and (3) the carrier obtained in the step (2) after the second contact is subjected to roasting treatment, the first active component is Pd, and the second active component contains Ag. The method can realize one-step impregnation of the active component, and the prepared hydrogenation catalyst has excellent hydrogenation selectivity and is very suitable for selective hydrogenation of acetylene in an ethylene-acetylene mixture. 本发明涉及烯