Sichuan University

Sinocat Environmental Technology Co., Ltd.

Sinotech Company Limited

Haidi Xu

Yaoqiang Chen

Yun Wang

Yun Li

Qizhang Chen

Jianli Wang

Yongxiang Cheng

Xi Feng

Yi Dan

Yinhua Dong

Zhifeng Zhang

Zhimin Liu

Ming Zhao

Qingjin Lin

Yi Jiao

Dequan Chen

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 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

An AFI-CHA hybrid crystal molecular sieve and an NH-SCR catalyst using the AFI-CHA hybrid crystal molecular sieve as a carrier, and preparation methods thereof are disclosed. The AFI-CHA hybrid crystal molecular sieve includes an AFI-type SAPO-5 molecular sieve and a CHA-type SAPO-34 molecular sieve, with hybrid crystal grains of AFI and CHA. The hybrid crystal molecular sieve is synthesized by a hydrothermal synthesis method and can be obtained by changing the structure directing agent, the heating rate and the calcinating temperature in the preparation process. Further, copper is loaded on the basis of the hybrid crystal molecular sieve to prepare copper-based NH-SCR catalyst and corresponding monolithic catalyst. The catalytic activity and hydrothermal stability of the catalyst are significantly improved by the hybrid crystal molecular sieve.

AFI-CHA hybrid crystal zeolite and NH3-SCR catalyst using same as carrier, and preparation methods thereof

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Chengdu, China

Haidi Xu