China Petroleum Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Tsinghua University

Shujuan Wang

Zhixiang Zhang

Jinbing Li

Jianshe Chen

Wei Lin

Jun Jiang

Qiang Lin

Shuyuan Cao

Yan Li

Qian Xue

Xianfeng Li

Masayoshi Sadakata

Ligeng Wu

Yuejin Li

Zhiqiang Tang

Wujun Dai

Changhe Chen

Xuchang Xu

The present invention relates to an alumina support for silver catalyst, a process for preparing said alumina support, a silver catalyst made from said alumina support, and a use of said silver catalyst in the production of ethylene oxide by the oxidization of ethylene. According to the present invention, the silver catalyst made from the support prepared by potassium melt technology can have a high selectivity.

Alumina support for silver catalyst, preparation and use thereof

The present invention discloses an alumina carrier for a silver catalyst, a process for preparing the alumina carrier, a silver catalyst made from the alumina carrier, and a use of the silver catalyst in the production of ethylene oxide by the oxidization of ethylene. The alumina carrier comprises alumina and promoters, as well as titanium silicate molecular sieve(s); and therefore, has an improved catalytic activity.

Carrier for silver catalyst, its preparation, a silver catalyst made from the same and its use

An alumina support comprises alpha-alumina as the main crystal phase of its backbone, and having a specific surface area of no higher than 3.0 m/g, a pore volume ranging from 0.3 ml/g to 0.8 ml/g, an alkaline earth metal content ranging from 0.05% to 2.0% by weight of the support, wherein the support has such properties that treating the support with an aqueous oxalic acid solution having a concentration ranging from 0.4% to 2.0% by weight and having twice the weight of the support for 30 minutes can produce a leach liquor having an aluminum content of no higher than 60 &#x3bc;g/mL, a sodium content of no higher than 20 &#x3bc;g/mL, and a silicon content of no higher than 40 &#x3bc;g/mL. Processes for preparing the alumina support, silver catalysts comprising the alumina support, and methods of preparing ethylene oxide by ethylene oxidation using the silver catalyst are also disclosed herein.

Alumina support, a process for preparing the support, a silver catalyst prepared from the support, and use thereof

The present invention discloses a novel use of the FGD byproduct from thermal power plants and facilities and the specific method for alkali soil amelioration. In this method, after sampling, amount of NaCO, NaHCO, Mg(HCO),&#xb1;)Na and &#xb1;)Mg can be calculated by analysis. According to the component in FGD byproduct from thermal power plants and facilities, the amount for FGD byproduct from thermal power plants and facilities needed in the alkali soil to be ameliorated can be determined. The FGD byproduct from thermal power plants and facilities are scattered on the surface according to the alkalization degree. After irrigating, the soil is operated just like common land. This invention allows the FGD byproduct from thermal power plants and facilities to be utilized effectively and economically, changing from it from waste to a useful substance. Moreover, it provides a method for alkali soil amelioration, which is fast, efficient, consumes less water, is cost effective, and promising.

Use of the flue gas desulfurization byproduct from thermal power plants and facilities and a method for alkali soil amelioration

Growing community of inventors

Beijing, China

Shujuan Wang