Abstract:
An improved alkylation process utilizing a solid-acid catalyst comprising a rare earth containing zeolite and a hydrogenation metal is disclosed.
Abstract:
Process for the preparation of quasi-crystalline boehmite comprising the steps of: (a) preparing an aqueous precursor mixture comprising a water-insoluble aluminum source; (b) decreasing the pH of the precursor mixture of step (a) by at least 2 units; (c) increasing the pH of the mixture of step (b) by at least 2 units, and (d) aging the mixture of step (c) under hydrothermal conditions to form a quasi-crystalline boehmite. This process provides for the hydrothermal preparation of quasi-crystalline boehmites with high peptizability. The invention therefore further relates to quasi-crystalline boehmites with a high peptizability, measured as the Z-average submicron particle size. This Z-average submicron particle size preferably is less than 500 nm, more preferably less than 300 nm, even more preferably less than 200 nm, and most preferably less than 100 nm.
Abstract:
The invention relates to a process for the preparation of a shaped bulk catalyst comprising metal oxide particles comprising one or more Group VIII metals and two or more Group VIB metals which process comprises the steps of providing first metal oxidic particles comprising one or more first Group VIII metals and one or more first Group VIB metals, providing separately prepared second metal oxidic particles comprising one or more second Group VIII metals and one or more second Group VIB metals, wherein the composition of Group VIB and Group VIII metals in the first and second metal oxidic particles are different, combining the first and second metal oxidic particles before and/or during shaping and shaping the combined first and second metal oxide particles to form a shaped bulk catalyst. The invention further relates to the shaped bulk catalyst obtainable with the process In sulphided or unsulphided form and the use thereof in hydroprocessing.
Abstract:
The present invention pertains to a catalyst composition comprising at least one non-noble Group VIII metal component, at least two Group VIB metal components, and at least about 1 wt. % of a combustible binder material selected from combustible binders and precursors thereof, the Group VIII and Group VIB metal components making up at least about 50 wt. % of the catalyst composition, calculated as oxides. The invention also pertains to a process for preparing the catalyst, to its use in hydroprocessing and to its recycling. The catalyst according to the invention has a higher strength than corresponding binder-free catalysts, and are easier to recycle than catalysts containing a non-combustible binder.
Abstract:
A process for the production of a ketone having a carbon number between about 20 and about 40 comprising contacting fatty acids containing from about 10 to about 21 carbons atoms with a hydrotalcite catalyst under conditions effective to decarboxylate said acids. More particularly said decarboxylation conditions comprise: a temperature in the range between about 300° C. and about 400° C.; a pressure in the range between about 0.01 and about 5 bar; and a weight hourly space velocity (WHSV) of from about 0.1 to about 10 hr−1.
Abstract:
A process is disclosed for the preparation of an additive-containing anionic clay generally comprising the steps of: a) milling a physical mixture of a divalent metal compound and a trivalent metal compound, b) calcining the milled physical mixture at a temperature in the range of about 200 to about 8000 C, and c) rehydrating the calcined mixture in aqueous suspension to form the additive-containing anionic clay, wherein an additive is optionally present in the physical mixture of step (a) and present in the aqueous suspension of step (c), and the additive is essentially free of vanadium.
Abstract:
Process for the preparation of a catalyst comprising the steps of (a) preparing a slurry comprising clay, zeolite, and quasi-crystalline boehmite, provided that the slurry does not comprise peptised quasi-crystalline boehmite, (b) adding a monovalent acid to the slurry, (c) adding a silicon source to the slurry, and (d) shaping the slurry to form particles.This process leads to a catalyst with high accessibility and high attrition resistance.
Abstract:
A method for the hydrodeoxygenation of an oxygenate feedstock comprising contacting the feedstock with a sulphided catalyst composition under hydrodeoxygenation conditions, wherein the catalyst composition comprises: i) a porous carrier substantially comprised of alumina, the carrier comprising between about 0.001 and about 1 wt. % phosphorous and between about 0.001 and about 1 wt. % silicon (both calculated as oxides) and having a mean pore diameter in the range from about 5 nm to about 40 nm; and, ii) from about 1 to about 20 wt. % of an active metal component (calculated as oxides based on the weight of the composition) borne on said porous carrier and which comprises at least one Group VIB metal and at least one Group VIII metal.
Abstract:
Novel compositions of matter comprising a cationic layered material and a second compound. The second compound has a reflection in its XRD pattern at 18.5 degrees two-theta, and s second reflection at 29 degrees two-theta. The composition of matter may be used in hydrocarbon conversion, purification, and synthesis processes, such as fluid catalytic cracking and hydroprocessing. The materials are especially suitable for the reduction of SOx and NOx emissions and the reduction of the sulfur and nitrogen content in fuels like gasoline and diesel.
Abstract:
Process for the preparation of an aluminium phosphate-containing composition wherein an aluminium source is converted partly to aluminium phosphate using a phosphorus-containing compound and partly to (i) an anionic clay and/or a Al-MII mixed metal (hydr)oxide using a divalent metal (MII) source, (ii) an aluminosilicate using a silicon source, and/or (iii) a MII- aluminosilicate using both a divalent metal source and a silicon source.