Abstract:
An alkylaromatics isomerisation catalyst, which catalyst comprises at least 50 wt % of an inorganic binder; at least 0.01 wt % of a Group VIII metal and 1-9 wt % ZSM-12 zeolite wherein the silica to alumina molar ratio (SAR) of the ZSM-12 zeolite is in the range of from 60 to 200, and a process for the isomerisation of alkylaromatics to provide a reaction mixture, said process comprising contacting a hydrocarbon stream comprising alkylaromatics with such catalyst.
Abstract:
An exhaust gas cleaning system, comprising an active regenerable particulate filter and an SCR catalyst comprising a hydrothermally microporous stable zeolite having the AEI type framework and being promoted with copper, where the zeolite is SSZ-39.
Abstract:
A process for producing an alkylated aromatic compound comprises contacting an aromatic starting material and hydrogen with a plurality of catalyst particles under hydroalkylation conditions to produce an effluent comprising the alkylated aromatic compound, the catalyst comprising a composite of a solid acid, an inorganic oxide different from the solid acid and a hydrogenation metal, wherein the distribution of the hydrogenation metal in at least 60 wt % of the catalyst particles is such that the average concentration of the hydrogenation metal in the rim portion of a given catalyst particle is Crim, the average concentration of the hydrogenation metal in the outer portion of a given catalyst particle is Couter, the average concentration of the hydrogenation metal in the center portion of the given catalyst particle is Ccenter, where Crim/Ccenter≧2.0 and/or Couter/Ccenter2.0. Also disclosed are rimmed catalyst and process for making phenol and/or cyclohexanone using the catalyst.
Abstract:
Fluid catalytic cracking (FCC) processes are described, the processes utilizing one or more boron oxide components. Also described are FCC compositions and methods of manufacture. One or more boron oxide components on FCC compatible inorganic particles are added to a FCC unit to crack hydrocarbon feeds, resulting in lower hydrogen and coke yields.
Abstract:
A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel.
Abstract:
The present invention discloses a modified Y molecular sieve, a preparation method and a use of the modified Y molecular sieve, a supported catalyst, and a hydrocracking method. The silica-alumina mole ratio in the surface layer of the modified Y molecular sieve is 20-100:1, and the silica-alumina mole ratio in the body phase of the modified Y molecular sieve is 8-30:1. When a hydrocracking catalyst prepared from the modified Y molecular sieve is used for hydrocracking, the hydrocracking catalyst has higher reactivity and higher nitrogen tolerance. The hydrocracking catalyst prepared from the modified Y molecular sieve is suitable for use for increasing the yield of diesel oil, increasing the yield of chemical materials, and catalyzed hydrogenation conversion of diesel oil, etc.
Abstract:
A second-stage hydrocracking catalyst is provided comprising: a. from 40 wt % to 70 wt % of a zeolite USY having an ASDI from 0.05 to 0.18; b. an amorphous silica alumina; c. a second alumina; and d. 0.1 to 10 wt % noble metal; wherein the second-stage hydrocracking catalyst has a BET surface area from 450 to 650 m2/g. A second-stage hydrocracking process is provided comprising using the second-stage hydrocracking catalyst to produce middle distillate. A method for making the second-stage hydrocracking catalyst is also provided.
Abstract:
Regenerable aromatization catalysts having high surface area and pore volume, as well as methods for producing these catalysts, are disclosed.
Abstract:
A catalyst composition comprising at least about 10% by weight pentasil, at least about 12% by weight Y-type zeolite at a pentasil to Y zeolite ratio of at least 0.25, and wherein the pentasil and Y zeolite comprise at least about thirty-five percent of the catalyst have been shown to optimize light olefin yields and LPG from FCC processes. Embodiments having matrix surface areas greater than 25 m2/g, phosphorous and rare earth are preferred. The compositions of this invention are particularly useful in typical fluid catalytic cracking (FCC) processes.
Abstract:
A process for producing an alkylated aromatic compound comprises contacting an aromatic starting material and hydrogen with a plurality of catalyst particles under hydroalkylation conditions to produce an effluent comprising the alkylated aromatic compound, the catalyst comprising a composite of a solid acid, an inorganic oxide different from the solid acid and a hydrogenation metal, wherein the distribution of the hydrogenation metal in at least 60 wt % of the catalyst particles is such that the average concentration of the hydrogenation metal in the rim portion of a given catalyst particle is Crim, the average concentration of the hydrogenation metal in the center portion of the given catalyst particle is Ccenter, where 0.2≦Crim/Ccenter