A rare earth-containing Y zeolite has at least two mesopore pore-size distributions at 2-3 nanometers and 3-4 nanometers. A catalytic cracking catalyst contains the rare earth-containing Y zeolite. When used in the catalytic cracking of heavy oil, the catalytic cracking catalyst invention has excellent heavy oil conversion ability, higher gasoline yield, and lower coke selectivity.

A bottoms cracking catalyst composition, comprising: about 30 to about 60 wt % alumina; greater than 0 to about 10 wt % of a dopant, measured as the oxide; about 2 to about 20 wt % reactive silica; about 3 to about 20 wt % of a component comprising peptizable boehmite, colloidal silica, aluminum chlorohydrol, or a combination of any two or more thereof; and about 10 to about 50 wt % of kaolin.

The invention discloses a bifunctional additive for increasing low-carbon olefins and reducing slurry in cracking product, wherein the dry-basis components of said additive is as follows: 40˜55 wt % of phosphorus-containing MFI zeolite, 0˜10 wt % of large pore type Y and Beta zeolites, 3˜20 wt % of inorganic binder, 8˜22 wt % of inorganic matrix composed of alumina and amorphous silica-alumina and 15˜40 wt % of clay. The bifunctional additive is mainly used to facilitate production rate of cracked LPG and increase concentration of propylene in LPG and octane number of produced the gasoline, and at the same time reduce the yield of slurry in the cracking products. The invention also discloses its preparation method and application of said additive.

The present invention relates to a method for producing automobile exhaust gas catalytic converters, to the catalytic converters as such and to the use thereof. In particular, the method comprises a step which results in a smaller particle size of the catalytically active material used.

A rare earth-containing Y zeolite has at least two mesopore pore-size distributions at 2-3 nanometers and 3-4 nanometers. A catalytic cracking catalyst contains the rare earth-containing Y zeolite. When used in the catalytic cracking of heavy oil, the catalytic cracking catalyst provided has excellent heavy oil conversion ability, higher gasoline yield, and lower coke selectivity.

Nonabsorptive presulfided catalyst particles are provided which are coated with a suitable coating material such as paraffinic oil/wax, or a suitable polymer material, to prevent water adsorption on the catalyst particles.

A catalyst is provided for hydrodeoxygenation and hydroisomerization of paraffins having higher activity. The catalyst contains a molecular sieve, such as SAPO-11, a metal component such as platinum and/or palladium or nickel tungsten sulfide or nickel molybdenum sulfide and a binder such as gamma alumina. The catalyst exhibits a high proportion of weak acid sites and a relatively equal distribution of the metal component on the molecular sieve and the binder.

A carbonylation-dehydration dual-functional catalyst precursor, a preparation method thereof, a carbonylation-dehydration dual-functional catalyst and use thereof are provided. The carbonylation-dehydration dual-functional catalyst precursor includes a modified silica-aluminum molecular sieve having an 8-member ring channel structure; a modified metal oxie loaded on the modified silica-aluminum molecular sieve having an 8-member ring channel structure by coupling, the coupling being performed using a silane coupling agent, wherein a modified component in the modified silica-aluminum molecular sieve having an 8-member ring channel structure includes at least one selected from the group consisting of copper oxide, zing oxide and iron oxide, and has a loading amount of 0.5-5 wt %, based on a metal mass of the modified component; and the modified metal oxie is prepared by modifying a composite metal oxide with an acid solution or an alkali solution, wherein the composite metal oxide is prepared based on a co-precipitation-calcination method.

A method is disclosed for producing small crystal, high aluminum content zincoaluminosilicate crystalline materials having the SSZ-41 framework structure. The compositions made according to that method, as well as uses of the same, are also disclosed.

A process for the preparation of an extra-framework metal-containing aluminosilicate zeolite involves the steps of: (a) forming a reactant mixture A comprising (i) an aqueous slurry of an aluminosilicate zeolite in a H.sup.+-form, and (ii) a metal containing compound or free metal, wherein the mixture does not comprise ammonia, ammonium hydroxide or an ammonium salt, and (b) reacting the metal containing compound or free metal with the aluminosilicate zeolite in a H.sup.+-form in reactant mixture A and forming a product mixture B, a reaction mixture comprising the extra-framework metal-containing aluminosilicate zeolite. The metal comprises one or more of copper, iron, manganese, nickel and palladium. The step of reacting the metal with the aluminosilicate zeolite in a H.sup.+-form is performed in a single exchange. The extra-framework metal-containing aluminosilicate zeolite can then be used directly in forming a washcoat that can be applied to a support.