Abstract:
Use in a fluid catalytic cracking process of a catalyst or a catalyst additive comprising an anionic clay or its thermally treated form, said anionic clay comprising at least 0.5 wt% of potassium, calculated as K 2 O and based on the weight of potassium-containing anionic clay. By using such a catalyst or additive, the SO x emissions from the regenerator of an FCC unit can be reduced.
Abstract:
Oxidic composition consisting essentially of oxidic forms of a first metal, a second metal, and optionally a third metal, the first metal being either Ca or Ba and being present in the composition in an amount of 5-80 wt%, the second metal being Al and being present in the composition in an amount of 5-80 wt%, the third metal being selected from the group consisting of La, Ti, and Zr, and being present in an amount of 0-17 wt% - all weight percentages calculated as oxides and based on the weight of the oxidic composition, the oxidic composition being obtainable by (a) preparing a physical mixture comprising solid compounds of the first, the second, and the optional third metal, (b) optionally aging the physical mixture, without anionic clay being formed, and (c) calcining the mixture. This composition is suitable for use in FCC processes for the passivation of metals with only minimal influence on the zeolite's hydrothermal stability.
Abstract:
Oxidic composition consisting essentially of oxidic forms of a first metal, a second metal, and optionally a third metal, the first metal being either Fe or Zn and being present in the composition in an amount of 5-80 wt%, the second metal being Al and being present in the composition in an amount of 5-80 wt%, the third metal being selected from the group consisting of Mo, W, Ce, and V, and being present in an amount of 0-17 wt% - all weight percentages calculated as oxides and based on the weight of the oxidic composition, the oxidic composition being obtainable by (a) preparing a physical mixture comprising solid compounds of the first, the second, and the optional third metal, (b) optionally aging the physical mixture, without anionic clay being formed, and (c ) calcining the mixture. This composition is suitable for use in FCC processes for the reduction of SOx emissions from the regenerator and for the production of sulphur-lean fuels and has only a minimised influence on the zeolite's hydrothermal stability.
Abstract:
Process for the preparation of a catalyst composition comprising the steps of (a) treating an FCC equilibrium catalyst that contains alumina and zeolite with an acidic solution to obtain an acid-treated equilibrium catalyst, and (b) contacting the acid-treated equilibrium catalyst with an aqueous solution or suspension of a divalent metal compound. With this process, FCC equilibrium catalysts - even when highly contaminated with vanadium - can be upgraded to make them suitable again for use in catalytic processes, for instance as catalyst additives in FCC.
Abstract:
Compositions and methods suitable for removing poisonous metals from hydrocarbons are provided. The compositions comprise hydrotalcite having one or more trapping metals dispersed on the outer surface thereof.
Abstract:
Particulate compositions for promoting CO oxidation in FCC processes are provided, the compositions comprising an anionic clay support having at least one dopant, wherein at least one compound comprising iridium, rhodium, palladium, copper, or silver is deposited on the anionic clay support, and the composition is substantially free of platinum.
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 catalyst system for treating a hydrocarbonaceous feed comprising a matrix selected from the group consisting of alumina, silica alumina, titanium alumina and mixtures thereof; a support medium substantially uniformly distributed through said matrix comprising a SAPO-11 molecular sieve; and about 0.1 to about 1.0 wt % (based on the total weight of the catalyst system) of a catalytically active metal phase supported on said medium and comprising a metal selected from the group consisting of platinum, palladium, ruthenium, rhodium or mixtures thereof. The catalyst system is characterized in that said SAPO-11 molecular sieve has: a) a silica to alumina molar ratio of about 0.08 to about 0.24,- b) a phosphorous to alumina ratio of about 0.75 to about 0.83; c) a microsurface area of at least about 150m2/g; d) a crytallite size in the range of abouth 250 to about 600 angstroms, and e) a sodium content of less than about 2000 ppm weight.
Abstract:
The invention relates to a process for the preparation of a shaped bulk catalyst comprising metal oxide particles comprising one or more Group VlIl 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:
Process for the preparation of shaped catalyst compositions comprising zeolite and a non-zeolitic component comprising the steps of (a) aging a precursor mixture comprising zeolite and one or more precursor(s) of the non-zeolitic component to obtain a composition comprising zeolite and non-zeolitic component, and (b) shaping the composition comprising zeolite and non-zeolitic component to form shaped bodies. This process enables the production of shaped bodies comprising homogeneously dispersed zeolite and non-zeolitic component.