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., A CORPORATION OF THE STATE OF DELAWARE |
发明人 |
CAO, GUANG;MERTENS, MACHTELD, M.;STROHMAIER, KARL, G.;HALL, RICHARD, B.;COLLE, THOMAS, H.;AFEWORKI, MOBAE;BONS, ANTONIE, JAN;MORTIER, WILFRIED, J.;KLIEWER, CHRIS;LI, HAILIAN;GURAM, ANIL, S.;SAXTON, ROBERT, J.;MURAOKA, MARK, T.;YODER, JEFFREY, C. |