摘要:
Process for the preparation of a catalyst comprising the steps of: (a) combining solid acid particles with a binder to form a catalyst precursor; (b) calcining the catalyst precursor at a temperature in the range of 400-575°C, (c) impregnating the calcined catalyst precursor with a solution of a Group VIII noble metal and NH4+ ions; and (d) calcining the impregnated particles at a catalyst temperature in the range of 400-500°C. The use of two calcination steps in the above temperature ranges results in alkylation catalysts with improved performance.
摘要:
The invention relates to a process for the production of linear alkanes, containing less than 6'carbon atoms, from a mix comprising one or more hydrocarbons containing at least 6 carbon. atoms. The process uses a catalytic composition comprising particular combinations of a Y-type zeolite, at least one element selected from Zn, Mo, Cu, Ga, In, W, Ta, Zr, Ti, metals of Group VIII and optionally one or more lanthanides.
摘要:
A catalyst composition comprising a low acidity, highly dealuminated ultra stable Y zeolite having an Alpha value of less than about 3 and Broensted acidity measured by FT-IR from about 1 to about 20, preferably from about 1-10, micro mole/g of, an amorphous cracking component and a catalytic amount of hydrogenation component selected from the group consisting of a Group VI metal, a Group VIII metal, and mixtures thereof is disclosed. The present invention provides for a process for converting hydrocarbonaceous oils comprising contacting the hydrocarbonaceous oils with the catalyst under suitable hydrocarbon conversion conditions. Such processes in include, but are not limited to, single stage hydrocracking, two-stage hydrocracking, series-flow hydrocracking, mild hydrocracking, tube hydrocracking, hydrotreating, tube hydrofinishing, hydrodesulphurization, hydrodenitrification, catalytic dewaxing and catalytic cracking.
摘要:
A process for the catalytic reaction of organic compounds, in which the organic compounds are contacted with a catalyst comprising an interstitial metal hydride, having a reaction surface, to produce a catalyst-organic compound mixture, energy is applied, monatomic hydrogen is produced at the reaction surface of the interstitial metal hydride, and the organic compounds are reacted with the monatomic hydrogen. Reactions accomplished by this process include petroleum hydrocracking and hydrotreating processes. The method's performance can be further enhanced using radio frequency (RF) or microwave energy.
摘要:
ABSTRACTMethods and apparatus are taught for selectively oxidizing carbon monoxide in a source of gas containing carbon monoxide and hydrogen. A gas containing carbon monoxide and hydrogen is fed into a membrane reactor (10, 50, 60) capable of selectively absorbing the carbon monoxide. Preferably, the reactor comprises a substantially defect-free zeolite membrane (4) having at one metal that acts as an oxidation catalyst. The zeolite membrane (4) may be supported on a porous ceramic support (2, 52, 61) and the average pore diameter is preferably between about 0.3nm and about 1.0nm. Moreover, the substantially defect-free zeolite membrane (4) preferably has a thickness between about 0.1 micron and about 50.0 microns. The at least one metal is preferably capable of selectively oxidizing the carbon monoxide and is preferably platinum. Preferably, the temperature of reactor housing is maintained at about 200-300 degrees centigrade.
摘要:
A hydrocracking catalyst is provided that includes a crystalline molecular sieve material component having a faujasite structure and an alpha acidity of less than 1, preferably 0.3 or less, and a dispersed Group VIII noble metal component. The extremely low acidity allows selective hydrocracking of the aromatic and naphthenic species in a feedstock, while limiting the cracking of paraffins. The catalyst produces improved yields of products, such as diesel fuel, at high conversion rates and with high cetane values.
摘要:
A catalyst composition containing a zeolite and platinum, and a method of preparing such catalyst composition, are disclosed. The thus-obtained catalyst composition is employed in the conversion of a hydrocarbon to aromatics.
摘要:
A noble metal hydrocracking catalyst which has high selectivity for naphtha range products and a process for its preparation are provided. The hydrocracking catalyst comprises: (a) from 70 to 95 weight percent of a Y zeolite, based on the catalyst having a silica to alumina mole ratio of from 4.8 to less than 6.0, a unit cell constant in the range of 24.50 to 24.57, an Na2O level of less than or equal to 0.25 weight percent; (b) from 10 to 30 weight percent, based on the catalyst of an alumina having a mercury intrusion pore volume in the range from 0.55 to 0.85 cc/g; and (c) from 0.5 to 1 weight percent, based on the catalyst of a noble metal; wherein said hydrocracking catalyst has a dispersivity of the noble metal of equal or greater than 48 % by hydrogen chemisorption measurement, a surface area of greater than or equal to 690 m2/g by BET surface area measurement, a compacted bulk density in the range of from 0.40 to 0.58 g/cc, and a mercury pore volume in the range of from 0.4 to 0.7 ml/g.
摘要:
Die Erfindung betrifft einen Katalysator zur Reinigung der Abgase von Dieselmotoren. Der Katalysator enthält ein Zeolithgemisch aus mehreren Zeolithen mit unterschiedlichen Modulen und Platingruppenmetalle sowie weitere Metalloxide aus der Gruppe Aluminiumsilikat, Aluminiumoxid und Titanoxid, wobei das Aluminiumsilikat ein Gewichtsverhältnis Siliziumdioxid/Aluminiumoxid von 0,005 bis 1 aufweist und die Platingruppenmetalle nur auf den weiteren Metalloxiden abgeschieden sind.
摘要翻译:催化剂含有沸石,Pt族金属和选自Al-硅酸盐,Al 2 O 3和氧化钛的金属氧化物。 硅酸铝的SiO 2 / Al 2 O 3的重量比为0.005-1。 Pt族金属仅沉积在金属氧化物上。
摘要:
A catalyst and process are described which are particularly effective in the dehydrogenation of one or more C3 to C6 saturated hydrocarbons. The catalyst, made by a simplified preparation process, is a platinum-loaded aluminosilicate molecular sieve exhibiting the MFI structure. The supported or unsupported catalyst when used to dehydrogenate alkanes is long-lived; it also has an excellent conversion and selectivity to the corresponding olefin while exhibiting minimal coking.