Gm Global Technolgoy Operations, Inc.

Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Fengshou Xiao

Xiangju Meng

Wei Ping Li

Gongshin Qi

Jie Zhu

Method for preparing zeolite beta which method comprises crystallization of zeolite beta from a solution comprising a template, a silicon source and an aluminum source in which the template is polymeric compound comprising ionizable polydiallyldimethylammonium (PDADMA) cationcrystallization. Furthermore, the present invention provides the use of thus prepared zeolite beta in catalysts for hydrocarbon conversions.

Process for preparing zeolite beta and use thereof

A Cu-amine complex of hydrated copper sulfate and ethylene diamine or an oligomer of ethylene diamine is employed in a direct (one-pot) synthesis of a copper-cation containing silicoaluminophosphate (SAPO) zeolite material having the Cu/SAPO-34 structure. The copper-amine complex is included in an aqueous gel of precursors of the SiO, AlO, and POconstituents, which are mixed, aged, and thermally treated to form the desired Cu/SAPO-34 structure. The synthesized Cu/SAPO-34 material is demonstrated to be an effective catalyst material in conversion of nitric oxide to nitrogen (using ammonia as a reductant) in synthetic exhaust streams characteristic of diesel engine and other lean-burn vehicle engine exhaust streams.

Synthesis of Cu/SAPO-34 with variable copper loadings

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Hangzhou, China

Fengshou Xiao