Tin-containing molecular sieve catalyst used for preparing ethylene glycol by hydrating ethylene oxide and application method

• Main Authors: LI LANDONG, TANG BO, DAI WEILI, WU GUANGJUN, GUAN NAIJIA
• Format: Patent
• Language: English
• Published: 25.03.2015
• 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 relates to a tin-containing molecular sieve catalyst used for preparing ethylene glycol by hydrating ethylene oxide and an application method of the tin-containing molecular sieve catalyst. The tin-containing molecular sieve catalyst is prepared by taking H-SSZ-13 zeolite molecular sieve raw powder as a raw material, carrying out water steam treatment or water steam and acid combined treatment on the raw material, and introducing active central metal in a manner of roasting by a vacuum pipe type furnace. The preparation method comprises the following steps: mixing an H-SSZ-13 zeolite molecular sieve treated by the water steam or acid with an organic metal compound precursor at a ratio and roasting in vacuum. According to the tin-containing molecular sieve catalyst, the problems of high water ratio, high energy consumption, environmental pollution caused in a production process and the like in a traditional process can be solved. According to the catalyst, a carrier is cheap and easy to obtain, a preparation process of the catalyst is simple and the stability of the catalyst is good; and the catalyst has excellent catalyzing activity and selectivity when being applied to a process of preparing ethylene glycol by directly hydrating ethylene oxide under a warm condition, is easy to recycle and can be used for industrial production for preparing ethylene glycol by hydrating ethylene oxide.