823results about How to "Improve hydrogenation activity" patented technology

A hydrogenation catalyst and its preparation and use are disclosed. The said catalyst consists of NiO 10-30wt.% and Al2O3 70-90wt.%, obtained by: drying quasi-hydrated aluminum oxide powder, passing steam to ream, roasting to have macroporous aluminum oxide carrier, dipping it in a solvent containing nickel compound, filtering, drying, roasting to form the final product. It is suitable for fractional oil containing dialkene and styrene and their derivatives to directly prepare solvent with high aromatic hydrocarbon and gasoline with high octane level by hydrogenation.

The invention discloses a hydrocracking catalyst and a preparation method thereof. The catalyst is prepared by a carbonization method and is amorphous silica aluminum subject to hydro-thermal treatment. The amorphous silica aluminum prepared by the method has the characteristics of large specific surface, large pore volume, centralized pore distribution and appropriate acidity; an enough channel is provided for reactants, the reactants and products are convenient to enter / exit, the active ingredients of the carrier are greatly increased, and the distribution uniformity of the acid centre in the pore channel is improved; and moreover, as a larger space and a specific surface are provided for loading metal, the hydrogenated metal has higher dispersibility, the metal utilization rate is improved, and the catalyst provided by the invention has appropriate cracking activity as well as high hydrogenation activity and medium oil selectivity. The catalyst provided by the invention is particularly suitable for finishing the single-stage hydrocracking process once.

The invention relates to a composite molecular sieve-containing medium oil type hydrocracking catalyst, which comprises an active component and a binder, wherein the active component adopts amorphous SiO2-Al2O3 as a carrier, adopts a composite molecular sieve as an acid component, and adopts a group VIB metal and a group VIII metal as hydrogenation activity components, and the composite molecular sieve comprises a Y molecular sieve and a ZSM-23 molecular sieve. According to the present invention, the deep dealuminzation modified Y molecular sieve has characteristics of high crystallinity, large surface area, high silica-alumina ratio, low cell constant, rich secondary pore, low acid center density, high moderate-intensity acid center ratio, and the like; the modified ZSM-23 molecular sieve has characteristics of smooth pore channel, less acid center and outstanding isomerism performance, wherein a light naphtha component is isomerized so as to increase an octane number of naphtha; the composite molecular sieve compounded from the Y molecular sieve and the ZSM-23 molecular sieve is adopted as the acid cracking component so as to provide advantages of the Y molecular sieve and the ZSM-23 molecular sieve, and compounding is performed according to the ratio of the present invention, such that the best catalysis effect can be obtained, and the obtained catalyst is suitable for the medium oil type hydrocracking catalyst; and the catalyst prepared from the composite molecular sieve has characteristics of excellent medium oil selectivity, good activity and good stability.

The invention is a hydro-deoxidation and alkene-saturation catalyst of Fischer-Tropsch oil product and its components in weight percent: nickel oxide 5.0-18.0%, cobalt oxide 0-11.0%, copper oxide 0-6.0%, iron oxide 0-12.0%, titanium oxide 0-12.0%, lanthanum oxide 0-8.0% and carrier 46.0-85.0%. Its preparing method includes in turn carrier preprocessing and after-processing of supported active component and catalyst. It has higher activity to hydro-deoxidation and alkene saturation of the oil product, especially applied to the hydrofining process of the iron-base paste Fischer-Tropsch oil product with higher content of oxygen-containing compound and alkene.

The invention discloses a glycol catalyst synthesized by hydrogenating oxalic ester and a preparation method and an application thereof. The catalyst has the chemical formula of CuO-AOx / Al2O3, wherein A is one or more than one metallic element of Zn, Mn, Mg and Cr, x is half of the valence number of A, the content of CuO accounts for 40 percent to 80 percent of the catalyst mass, the content of AOx accounts for 5 percent to 40 percent of the catalyst mass and the content of Al2O3 accounts for 5 percent to 30 percent of the catalyst mass. The catalyst has high activity and selectivity at low temperature and under low pressure, the energy and power consumption in production can be reduced greatly and the catalyst has good stability and long service life. The preparation method of the catalyst is simple and raw materials as industrial products are easily obtained and have low price.

The invention relates to a method for preparing ethanol through acetic ester hydrogenation. The method performs an acetic ester hydrogenation reaction to generate ethanol under the conditions of certain temperature, pressure, hydrogen / ester molar ratio and hydrogen circulation in a fixed-bed reactor filled with a copper-based catalyst, wherein in the copper-based catalyst, a mesoporous molecular sieve MCM-41 is used as a carrier, copper is used as an active component, and the oxide of at least one element of La and Ce is used as an auxiliary; and the MCM-41 accounts for 40-90% of the catalyst by weight, the active component copper accounts for 10-50% of the catalyst by weight, and the auxiliary accounts for 0.1-20% of the catalyst by weight. According to the method for preparing ethanol through acetic ester hydrogenation, provided by the invention, when the reaction temperature is 220 DEG C, the reaction pressure is 3MPa, the hydrogen / ester molar ratio is 30 and the mass airspeed of acetic ester is 2h<-1>, the conversion rate of acetic ester is 98.5%, and the ethanol selectivity is as high as 99.6%, thereby showing extremely high hydrogenation activity, selectivity and stability.

The invention provides a hydrofining catalyst and a preparation method thereof. The catalyst comprises an aluminum oxide carrier which is modified by an assistant and VIII group and VIB group metal oxides which are loaded on the carrier, wherein, the assistant is at least one of boron, phosphorus, silicon and titanium compounds. The catalyst is prepared by an immersion method which is characterized in that an organic stabilizer is added into immersion fluid; the number of metal active centers of the catalyst is increased with the addition of the organic stabilizer; the physicochemical properties of the catalyst is improved by the way the aluminium oxide is modified by the assistant; therefore, the hydrofining catalyst prepared by the method in the invention has high desulfuration and denitrification activity, and is applicable to the hydrotreating process of various distillate oil, in particular to poor quality diesel oil.

The invention provides an oil soluble molybdenum-based precursor of a catalyst, a preparation method and application thereof, relating to the technical field of heavy oil hydrocracking catalysts and solving the problems of low catalytic hydrogenation activity and high cost of the existing catalysts. The preparation method for the precursor comprises the steps of (1) mixing a molybdenum source with water, reacting for 30-240 minutes at 70-90DEG C, and adding inorganic acid; (2) adding polycarbon alcohol into P2S5 in 5-15 minutes at 50-80DEG C, and reacting for 1-3 hours at 70-100DEG C; (3) adding the product of step (2) into the product of step (1), adding resin, and reacting for 4-8 hours at 70-110DEG C; (4) separating oil phase from the product of step (3) so as to obtain the target product. The precursor can form MoS2 active components through self sulfurization and in situ decomposition, is used in slurry reactor hydrocracking of poor heavy oil with high content of metal, carbon residue and sulfur, and can lower the yield of coke and keep a device to run for a long period.

Processes and bi-functional catalysts are disclosed for hydrotreating bio-oils derived from biomass to produce bio-oils containing fuel range hydrocarbons suitable as feedstocks for production of bio-based fuels.

The invention discloses a catalyst of hydrogenated and cracked inferior heavy oil and residual oil suspending bed, which is characterized by the following: adopting 75-98m% water as dispersing dielectric; selecting 2-25m% transition sulfate metal (Fe, Co, Ni, Cr, Cu, Mn, Mo, W) as dispersing phase; controlling grain size between 0.1-100um; hydrogenating and cracking heavy oil into light oil.