The invention relates to a palladium carbon catalyst which comprises the following components: (1) nanometer TiO2-modified active carbons are used as composite carriers; (2) Pd nanometer particles are used as active components, wherein the strong interaction between metals and the carriers exists in the active components and TiO2 on the composite carriers to form a Pd@TiO2 structure so as to form structural Pd@TiO2/active carbons of the catalyst.

Palladium carbon catalyst as well as preparation method and application thereof

The invention relates to a method for mixed production of light-weight aromatic hydrocarbon by use of catalytic cracking diesel and C10 distillate oil The method comprises the following steps: firstly mixing the catalytic cracking diesel and the C10 distillate oil with hydrogen, performing a hydrofining reaction to remove sulfur and nitrogen, saturate olefin and appropriately saturate aromatic hydrocarbon; then, extracting a hydrofining product by using an extraction solvent to obtain extract oil containing rich aromatic hydrocarbon and raffinate oil containing rich alkane; using the raffinate oil as a clean diesel oil concoction component, and performing rectification separation on the extract oil to obtain aromatic hydrocarbon extract oil; performing a hydrocracking reaction on the aromatic hydrocarbon extract oil, performing cutting separation on a hydrocracking product, using a distillate oil product greater than 195 DEG C as the clean diesel oil concoction component, feeding the distillate oil product smaller than 195 DEG C as an aromatic hydrocarbon raw material into an aromatic hydrocarbon treatment device to obtain a light-weight aromatic hydrocarbon product and a clean gasoline concoction component By adopting the method provided by the invention, the yield of the light-weight aromatic hydrocarbon is increased, and meanwhile high-quality clean fuel oil is obtained and the high additional value utilization of the C10 distillate oil is achieved

Method for mixed production of light-weight aromatic hydrocarbon by use of catalytic cracking diesel and C10 distillate oil

The invention relates to a palladium carbon catalyst which comprises an activated carbon carrier, wherein the surface of the activated carbon carrier is loaded with a metal oxide layer, thus forming a metal oxide-activated carbon compound carrier; and the compound carrier is loaded with palladium nanoparticles The invention also relates to a preparation method of the palladium carbon catalyst, which comprises the following steps: loading metal salt on activated carbon, precipitating through an alkali solution, washing, and drying to obtain the metal oxide-activated carbon compound carrier; loading palladium salt on the metal oxide-activated carbon compound carrier to obtain a precursor; and reducing the precursor, and drying to obtain a metal oxide assisted palladium carbon catalyst According to the metal oxide assisted palladium carbon catalyst prepared by the invention, the palladium nanoparticles are small and have a particle size of 1-5 nm; the palladium dispersion degree measured by a CO dynamic chemical adsorption method is 35-55%; and the catalyst is high in activity and stability, and can be used circularly and repeatedly

Metal oxide assisted palladium carbon catalyst and preparation method thereof

The invention discloses an alumina forming material and its preparation method, and the alumina forming material is characterized, by use of a mercury intrusion method, in that: the pore volume is 0.5-1 ml/g, the specific surface area is 30-150 m /g, the most probable pore size is 80-300nm, the pore volume of holes with a diameter of 12-15nm accounts for 10-22% of the total pore volume, and the pore volume of holes with a diameter of 100-200nm accounts for 40-70% of the total pore volume. The preparation method of the alumina forming material is as follows: mixing a kind of hydrated alumina and a kind of alpha alumina for forming, drying, and baking at the baking temperature of 750-1000 DEG C for 1 to 10 hours, wherein the mixing ratio of the hydrated alumina to the alpha alumina is 20-75:25-80 by dry basis, the pore volume of the hydrated alumina is 0.9 to 1.4 ml/g, the specific surface area is 100-350 m /g, and the most probable pore diameter is 8-30nm. The alumina forming material having the properties can be used as adsorbents, fillers and catalyst carriers.

Alumina forming material and its preparation method

Method for preparing cyclohexane by catalyzing and hydrogenising benzene at room temperature

The invention discloses a supported ruthenium catalyst and a preparation method thereof. The preparation method is characterized in that the preparation method comprises the following steps: 1, preprocessing a carrier with a soluble alkaline earth metal salt, wherein the mass of the soluble alkaline earth metal salt accounts for 0.1-20% of the mass of the carrier; and 2, dipping the alkaline earth metal salt processed carrier with a material which comprises a primary active component metallic ruthenium and an assisted catalytic component comprising one or several of Ni, Co, Pd and Pt, wherein the mass of the primary component metallic ruthenium accounts for 0.1-5% of the carrier, and the mass of the secondary component comprising one or several of Ni, Co, Pd and Pt accounts for 0.01-5% of the mass of the carrier. The catalyst of the invention is mainly applied to the selective hydrogenation process of an aromatic ring of an aromatic compound, wherein the aromatic ring of the aromatic compound has at least one alkyl group, one ester group, one hydroxyl group or an amino group and also has at least one C1-8 alkyl group. Compared with catalysts prepared with the prior art, the catalyst of the invention has the advantages of low cost, simple preparation method, high activity, good selectivity, high safety in the operation of the aromatic ring hydrogenation, realization of the operation of the aromatic ring hydrogenation under a low pressure, and good economy.

Supported ruthenium catalyst and preparation method thereof

Method for preparing high-selectivity Pd/TiO2-C hydrogenation catalyst

The invention discloses a preparation method of a palladium carbon catalyst for hydrorefining of terephthalic acid. The method is characterized by employing the following steps of: exposing pretreated particles or molding activated carbon to light hydrocarbon solvent of titanium-containing compounds; filtering and purging with nitrogen gas; drying and impregnating the mixture into a solution of palladium-containing compound; reducing and washing the mixture to neutral, so as to obtain the palladium carbon catalyst. Compared with the prior art, the invention is characterized in that, first, grafted titanium dioxide and its cluster are firmly connected with activated carbon carrier, thereby effectively eliminating a strong reduction center on the activated carbon surface; second, the palladium carbon catalyst has high microcrystal content of metal palladium, good dispersion and high activity of catalyst. and third, the preparation method of the catalyst is simple.

Preparation method of palladium carbon catalyst

The invention discloses a NiO-MoO3/ TiO2 catalyst and a preparation method thereof. The catalyst comprises the following components in percentage by mass: 15 to 25 percent of NiO, 40 to 60 percent of MoO3, and 15 to 45 percent of TiO2. Compared with the prior art, the invention has the advantages that: 1, active ingredient particles and TiO2 nano particles are synchronously generated by coupling a hydrothermal generating process of the active ingredient particles of the catalyst and a hydrothermal generating process of the TiO2 nano particles together, so that the loading capacity of active ingredients is greatly improved; and 2, by highly dispersing the hydrothermally generated active ingredient particles of the catalyst on the TiO2 nano particles, agglomeration of the active ingredient particles is prevented, the interaction between the active ingredients and the TiO2 carrier is effectively regulated, the specific surface area, the pore volume and the aperture of the catalyst are greatly improved, and the utilization rate of active metals is improved.

Xu Jianwen

Papers

Supported ruthenium catalyst and preparation method thereof

Method for preparing high-selectivity Pd/TiO2-C hydrogenation catalyst

Preparation method of palladium carbon catalyst

NiO-MoO3/ TiO2 catalyst and preparation method thereof

Cracking C9 hydrogenation catalyst and preparation method thereof