A SUPPORT FOR SILVER CATALYST USED IN THE ETHYLENE OXIDE PRODUCTION, A PREPARATION METHOD FOR THE SAME, A SILVER CATALYST PREPARED FROM THE SAME, AND ITS USE IN THE ETHYLENE OXIDE PRODUCTION

• Main Authors: LIN WEI, XUE QIAN, CHEN JIANSHE, JIANG JUN, LI SHUYUN, ZHANG ZHIXIANG, LI JINBING
• Format: Patent
• Language: English; Korean
• Published: 22.03.2012
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE: A silver catalyst support for generating ethylene oxide, a method for manufacturing the silver catalyst, the silver catalyst manufactured by the same, and the use of the silver catalyst are provided to improve the selectivity of the silver catalyst. CONSTITUTION: The main crystal phase of an alumina support structure is alpha-alumina. The specific surface area of the support is lower than or equal to 3.0 m^2/g, preferably in a range between 0.5 and 2.0 m^2/g. The pore volume of the support is in a range between 0.3 and 0.8 ml/g, preferably in a range between 0.4 and 0.7 ml/g. The content of alkali earth metal, preferably barium, in the support is in a range between 0.05 and 1.8 wt%, preferably in a range between 0.1 and 1.0 wt%. The fluorine atomic percentage on the surface of the support is in a range between 0.3 and 8.0 atomic%, preferably in a range between 0.5 and 5.0 atomic% based on X-ray photoelectron spectroscopy.