Abstract: Catalyst particles comprising a first molecular sieve having one-dimensional 10-membered ring channels, and a second molecular sieve having more-dimensional channels; a process for the preparation of such catalyst particles; and a process for the preparation of an olefinic product, comprising reacting an oxygenate feedstock in a reaction zone in the presence of catalyst particles of the invention.

Abstract: A process for converting an oxygenate to an olefin-containing product, wherein oxygenate is contacted with an oxygenate conversion catalyst in a reactor system comprising two or more serially arranged riser reactor stages to obtain a riser reactor effluent from each stage, wherein each riser reactor stage comprises a single riser reactor or a plurality of parallel riser reactors, such that at least part of the riser reactor effluent of a preceding riser reactor stage is fed into a subsequent riser reactor stage, and wherein oxygenate is added to a plurality of the riser reactor stages; and a reactor system comprising two or more serially arranged riser reactor stages wherein the first of the two or more serially arranged riser reactor stages has a smaller total cross-sectional area than at least one of the subsequent riser reactor stages.

Abstract: Process for the preparation of an olefinic product, which process comprises contacting a reaction mixture comprising an oxygenate feedstock and an olefinic component with an oxygenate conversion catalyst comprising a molecular sieve having one-dimensional 10-membered ring channels, in a flow-through reactor unit defining a flow trajectory for fluids towards a downstream outlet for an olefinic reaction effluent from the flow-through reactor unit, wherein an olefinic co-feed is added at an upstream olefin feed inlet of the flow-through reactor unit, and wherein oxygenate feedstock is admitted to the reactor such that it is added to the reaction mixture at a plurality of locations along the feed trajectory.

Abstract: A process to prepare methanol and/or dimethylether from a solid carbonaceous feedstock comprising the steps of (a) feeding an oxygen-comprising gas and the carbonaceous feedstock to a burner firing into a reactor vessel, (b) performing a partial oxidation of the carbonaceous feedstock in said burner to obtain a stream of hot synthesis gas and a liquid slag whereby both the hot synthesis gas and the liquid slag flow downwardly relative to the burner, (c) cooling the hot synthesis gas by direct contact with a liquid water-containing cooling medium, (d) performing a water shift reaction on at least part of the synthesis gas, to obtain a synthesis gas effluent, (e) performing an oxygenate synthesis using the synthesis gas effluent of step (d), to obtain a methanol and/or dimethylether containing oxygenate effluent and a first liquid water-rich by-product, wherein at least part of the first liquid water-rich by-product is used in step (c), forming at least part of the liquid water-containing cooling medium.