Chabazite-containing molecular sieve, its synthesis and its use in the conversion of oxygenates to olefins

US7094389B2 · kind B2 · utility

Assignee

• ExxonMobil Chemical Patents Inc. · US

Inventors

• Guang Cao · Readington, US
• Machteld M. Mertens · Boortmeerbeek, BE
• Karl G. Strohmaier · Hackettstown, US
• Richard B. Hall · Whitehouse Station, US
• Thomas H. Colle · Houston, US
• Mobae Afeworki · Phillipsburg, US
• Antonie Jan Bons · Kessel-Lo, BE
• Wilfried J. Mortier · Kessel-Lo, BE
• Chris E. Kliewer · Clinton, US
• Hailian Li · Union City, US
• Anil Guram · Cupertino, US
• Robert J. Saxton · Sunnyvale, US
• Mark Muraoka · Walnut Creek, US
• Jeffrey C. Yoder · South San Francisco, US

Key dates

• Filing date: Dec 20, 2004
• Grant date: Aug 22, 2006
• Expiry date: Dec 20, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A crystalline material substantially free of framework phosphorus and comprising a CHA framework type molecular sieve with stacking faults or at least one intergrown phase of a CHA framework type molecular sieve and an AEI framework type molecular sieve, wherein said material, in its calcined, anhydrous form, has a composition involving the molar relationship:(n)X2O3:YO2,wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to about 0.5. The material exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.