摘要 |
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: <?in-line-formulae description="In-line Formulae" end="lead"?>(n)X<SUB>2</SUB>O<SUB>3</SUB>:YO<SUB>2</SUB>,<?in-line-formulae description="In-line Formulae" end="tail"?> 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. |
申请人 |
EXXONMOBIL CHEMICAL PATENTS INC. |
发明人 |
CAO, GUANG;STROHMAIER, KARL G.;COLLE, THOMAS H.;BONS, ANTONIE JAN;KLIEWER, CHRIS;GURAM, ANIL S.;MURAOKA, MARK T.;MERTENS, MACHTELD M.;HALL, RICHARD B.;AFEWORKI, MOBAE;MORTIER, WILFRIED J.;LI, HAILIAN;SAXTON, ROBERT J.;YODER, JEFFREY C. |