Other

Petrochina Company Limited

China National Petroleum Corporation

China University of Petroleum

Beijing Orienda Instruments Co., Ltd

China National Tobacco Quality Supervision & Test Center

Shengbao He

Wei Li

Yuan Wang

Jing Chen

Fei Chen

Xiao Dong Li

Jing He

Ke Lin

Fei Gao

Jianming Wang

Haiyan Liu

Qing Hua Hu

Lilong Jiang

Xiaojun Bao

Yang Liu

Lin Tian

Yuanyuan Yue

Yingwen Li

Ming Fan

Weigang Dong

Wei Zhang

Huaqun Zhou

Tiesen Li

Jianning Yu

Kunhong Liu

Xiaomin Feng

Xuesheng Hu

Jun Ni

Jianxin Lin

Bingyu Lin

Xingyi Lin

Chenchen Li

Ying Wang

Dawei Wen

Qing Cao

Yuan Xiu

Minna Dou

Dingzhong Yang

Huifeng Xue

Qingyuan Hu

Baojun Xin

Hongfei Zhang

Xingyi Jiang

Hongwei Hou

Yanjun Ma

Jun Xing

Nan Liu

Jin Yang

Yingyuan Wang

Anna Luo

Disclosed is a ruthenium-based catalyst for ammonia synthesis, preparation method and use thereof. The ruthenium-based catalyst comprises Ru&#x2014;Ba-A core-shell structure which comprises a ruthenium nanoparticle as a core covered with a first shell and a second shell sequentially, wherein the first shell consists of a barium nanoparticle, and the second shell consists of a metal oxide. The Ru&#x2014;Ba-A core-shell structure can effectively preventing agglomerations of ruthenium nanoparticles during the use of the catalyst and avoiding direct contact between the ruthenium nanoparticles and the metal oxides. In addition, barium nanoparticles have a promoting effect as an electronic promoter, which can effectively improve the stability and catalytic activity of ruthenium-based catalyst for ammonia synthesis, especially in the system for synthesizing ammonia from a coal gas.

Ruthenium-based catalyst for ammonia synthesis and preparation method and use thereof

A regeneration method for a liquefied gas thiol-removing alkaline solution comprising the following steps: performing an oxygenation reaction with respect to a liquefied gas thiol-removing alkaline solution and, at the same time, utilizing a high air-liquid condition to extract a disulfide and a polysulfide into a gas phase, thus completing the separation of the disulfide and the polysulfide from the alkaline solution, and implementing the regeneration of the liquefied gas thiol-removing alkaline solution.

Regeneration method for liquefied petroleum gas sweetening caustic

The present invention pertains to the field of molecular sieve synthesis, and relates to a synthesis method of ZSM-5 type molecular sieves. In this method, natural minerals, i.e., natural kaolin and natural diatomite, are used as the total silicon source and aluminum source required for the molecular sieve synthesis, and these two natural minerals are calcinated and subjected to acidic (alkaline) treatment before they are mixed at a certain ratio, and then crystallized under hydrothermal conditions to obtain the product, a ZSM-5 type molecular sieve. The ZSM-5 type molecular sieve obtained by the method according to the present invention is a hierarchical porous material having a crystallinity of 70% to 120% as compared to conventional ZSM-5 type molecular sieves synthesized by using pure chemical reagents, and the silica-to-alumina ratio in the molecular sieve product may be adjusted by varying the ratio of the two minerals in the raw materials for the synthesis. According to the present invention, the range of raw materials for the preparation of molecular sieve materials is broadened, and therefore not only the cost for the molecular sieve production is greatly reduced but also the greenness in the production process of the molecular sieve material is significantly improved.

ZSM-5 type molecular sieve synthesis method

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Beijing, China

Shengbao He