Sinocat Environmental Technology Co., Ltd.

Sinotech Company Limited

Qizhang Chen

Yun Li

Yongxiang Cheng

Yun Wang

Yaoqiang Chen

Haidi Xu

Ganxue Wu

Zhimin Liu

Hongyi Du

Yinhua Dong

Yi Dan

Tiantian Luo

Yanhua Zhang

Qin Wang

Lan Yang

Jianli Wang

Zhifeng Zhang

Dacheng Li

Xi Feng

Feng Zhang

Dequan Chen

Yi Yang

Kuan Wei

Ruifang Wang

Jie Wen

Dong Zeng

Guangfa Zu

Yi Yan

Xueqing Zhou

Zan Zhu

Dongdong Wu

Jinfeng Wang

Hui Ye

Li Lan

An ozone purification catalyst, and a preparation method therefor and an application thereof are provided. The catalyst coating uses macroporous, high specific surface and CeOand/or LaOmodified AlOas the carrier material, and Mn and/or Pd as the active component. The preparation method is to prepare the AlO-based material by a sol-gel method, and then to load the active components on the carrier material, and to dry, calcinate and solidify to obtain the ozone purification catalyst. The catalysts as prepared shows a fast and efficient purification of ozone. The complete conversion temperature covers a wide range of temperature. The catalyst has excellent texture performance, high specific surface area and large pore volume, which is beneficial to ozone purification when the car is running at high speed. The particle sizes and colors of the catalyst can be modified according to various requirements. According to the actual application, it can be coated on the radiator fins of automobile water tanks, and any place where coating is allowed in public areas such as urban bus stations, stop signs, kiosks, roadside guardrails, or exterior walls of buildings that is in contact with outdoor air.

Ozone purification catalyst and preparation method and application thereof

A cerium-zirconium-aluminum-based composite material, a cGPF catalyst and a preparation method thereof are provided. The cerium-zirconium-aluminum-based composite material adopts a stepwise precipitation method, firstly preparing an aluminum-based pre-treated material, then coprecipitating the aluminum-based pre-treated material with zirconium and cerium sol, and finally roasting at high temperature to obtain the cerium-zirconium-aluminum-based composite material. The cerium-zirconium-aluminum-based composite material has better compactness and higher density, and when it is used in cGPF catalyst, it occupies a smaller volume of pores on the catalyst carrier, such that cGPF catalyst has lower back pressure and better ash accumulation resistance, which is beneficial to large-scale application of cGPF catalyst.

Cerium-zirconium-aluminum-based composite material, cGPF catalyst and preparation method therefor

Disclosed in the present invention is an integrated catalyst system for stoichiometric-burn natural gas vehicles, the catalyst system consisting of a three-way catalyst, a molecular sieve catalyst, and a base body, the three-way catalyst and the molecular sieve catalyst being coated on a surface of the base body. In the integrated three-way catalyst and molecular sieve catalyst system of the present invention, at the same time that pollutants such as CO, HC, and NOin the exhaust of stoichiometric-burn natural gas vehicles are processed, the produced byproduct NHcan also be processed, and the conversion rates of CO, HC, NO, and NHare high.

Integrated catalyst system for stoichiometric-burn natural gas vehicles and preparation method therefor

A method for preparing a molecular sieve SCR (selective catalytic reduction) catalyst and a prepared catalyst therethrough. In the method, several molecular sieves are mixed and modified by transition metal or rare-earth metal via ion exchange, then loaded Fe by equivalent-volume impregnation, and loaded Cu by one or more liquid ion exchange. This present invention, combined with several techniques, such as modification of stable molecular sieve by transition and rare-earth metal, Fe loading by equivalent-volume impregnation and Cu loading by one or more liquid ion exchange, and after through stable and effective modification and loading control, the obtained catalyst material is coated on a carrier substrate via size mixing and coating process to be prepared into an integral catalyst.

Method for preparing molecular sieve SCR catalyst, and catalyst prepared therethrough

A low-temperature NOstorage catalyst for automobile exhaust purification and a preparation method thereof. Loading a noble metal salt solution on molecular sieve by equal volume impregnation method, wherein the noble metal salt solution comprises palladium nitrate and platinum nitrate, and the molecular sieve comprises SSZ, SAPO and BETA, then drying at 60-120&#xb0; C. for 2-6 h, roasting at 500-550&#xb0; C. in air for 2-5 h, and further roasting at 750-850&#xb0; C. in air for 2-5 h, and then mixing with aluminum sol, ball milling and pulping, and then coating the slurry on a carrier, wherein the loading on the coating is 100-250 g/L and the noble metal content is 10-150 g/ft, drying at 60-120&#xb0; C. for 2-6 h, then roasting at 500-550&#xb0; C. in air for 2-5 h, and further continuing roasting at 750-850&#xb0; C. in air for 2-5 h, to obtain the catalyst. Loading the noble metals Pt and Pd into a pore channel of a molecular sieve improves NOstorage capacity of a catalyst at low temperatures, and selecting a different type of molecular sieve as an NOstorage unit and increasing a roasting temperature of a molecular sieve material on which Pt and Pd are loaded significantly increases NOstorage capacity.

Low-temperature NOstorage catalyst used for automobile exhaust purification and preparation method thereof

Disclosed in the present invention is a tail gas treatment catalyst. The catalyst consists of a carrier, a first catalyst, and a second catalyst. The first catalyst and the second catalyst are provided on both ends of the carrier. The first catalyst can purify pollutants in tail gas. The second catalyst can purify a byproduct, ammonia, obtained by the purification by the first catalyst and pollutants that are not completely purified by the first catalyst. The second catalyst is of a double-layer structure; the lower layer consists of an oxygen storage material, aluminum oxide, and a second active component; the second active component is a composition of Pt and Pd, or a composition of Ce, Fe, Ni and Cu; the upper layer consists of a molecular sieve and a third active component; the third active component is Cu or a composition of Cu and Fe. The tail gas treatment catalyst of the present invention has high purification treatment efficiency, and can significantly reduce the emissions of CH, CO, and NOin the tail gas, especially reduce the content of the byproduct, NH, so that the tail gas can meet China VI emission standards.

Tail gas treatment catalyst, preparation method therefor and use thereof

Growing community of inventors

Chengdu, China

Qizhang Chen