SCR catalysts preparation methods

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United States of America Patent

PATENT NO 8956992
APP PUB NO 20130108544A1
SERIAL NO

13282594

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Abstract

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A method of replacing or exchanging non-metal charge balancing cations located at ion-exchanges sites within SAPO frameworks with cations of a transition metal using a solid state ion-exchange process. Transition metal-containing particles are formed on surfaces of SAPO particles, and thereafter the particles are heated in air to initiate the solid-state ion-exchange process. The transition metal-containing particles and the SAPO particles are heated to a temperature and for an amount of time to produce transition metal cations, and for the transition metal cations to replace at least a portion of the non-metal cations located within the SAPO frameworks.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 M/C 482-C24-A65 DETROIT MI 48265-3000
TSINGHUA UNIVERSITYNO 1 QINGHUAYUAN HAIDIAN DISTRICT BEIJING 100084

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Wei Troy, US 2284 14552
Qi, Gongshin Troy, US 91 595
Wang, Lei Beijing, CN 2386 21419

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