A PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT, PROCESS FOR THE MANUFACTURE OF AN OXYGENATE CONVERSION CATALYST AND AN OXYGENATE CONVERSION CATALYST

摘要

A process for the preparation of an olefinic product in the presence of an oxygenate conversion catalyst, the catalyst comprising a molecular sieve, wherein the molecular sieves comprises a SAPO-type silicoaluminophosphate, MFI-type aluminosilicate and/or MEL-type aluminosilicate, and a sulphur species at an elemental sulphur loading of at least 0.05 wt% based on total catalyst, the process comprising reacting an oxygenate feedstock under oxygenate conversion conditions to produce an olefinic reaction product. Further a process for the manufacture of an oxygenate conversion catalyst, and an oxygenate conversion catalyst comprising a molecular sieve having n-membered ring channels wherein n is 10 or less, and a sulphur species.