Isomerization processes such as the isomerization of ethylbenzene and xylenes, are catalyzed by the new crystalline aluminosilicate zeolite comprising a novel framework type that has been designated UZM-55. This zeolite is represented by the empirical formula:

M.sup.+.sub.mRAl.sub.1-xE.sub.xSi.sub.yO.sub.z

where M represents a metal or metals selected from zinc or Group 1 (IUPAC 1), Group 2 (IUPAC 2), Group 3 (IUPAC 3) or the lanthanide series of the periodic table including sodium, potassium or a combination of sodium and potassium cations, R is an organic structure directing agent or agents derived from reactants R1 and R2 such as where R1 is diisopropanolamine and R2 is a chelating diamine, and E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof. Catalysts made from UZM-55 have utility in various hydrocarbon conversion reactions.

An object is to provide a means for suppressing a deterioration in catalytic performance even after being exposed to high temperature exhaust gas containing a phosphorus compound for a long period of time.

An exhaust gas purifying catalyst including palladium supported on cerium-aluminum composite oxide containing cerium at from 3 to 60% by mass in terms of cerium oxide.

Disclosed are catalyst compositions and their use in a process for the conversion of a feedstock containing C.sub.8+ aromatic hydrocarbons to produce light aromatic products, comprising benzene, toluene and xylene. The catalyst composition comprises a zeolite which comprises a MOR framework structure and a MFI and/or MEL framework structure, (b) at least one first metal of Group 10 of the IUPAC Periodic Table, and (c) optionally at least one second metal of Group 11 to 15 of the IUPAC Periodic Table. In one or more embodiments, the MOR framework structure comprises mordenite, preferably a mordenite zeolite having small particle size. The MFI framework structure preferably comprises ZSM-5, and the MEL framework structure preferably comprises ZSM-11.

A molecular sieve adsorbent composition is provided that includes an inorganic molecular sieve having a surface and a native adsorption property. Carbon having a mean domain size of between 1 and 10 nm is deposited on the surface or admixed into contact with the surface in an amount to reduce the resistivity and within 10% of the native adsorption property. A method for producing an inorganic molecular sieve adsorbent composition includes the application of carbon having mean domain sizes of between 1 and 10 nanometers to a surface of the inorganic molecular sieve adsorbent composition at a temperature that does not exceed 400? C. and under a controlled gaseous environment to produce a carbon containing inorganic molecular sieve adsorbent composition. The carbon containing inorganic molecular sieve adsorbent composition is removed from the controlled gaseous environment to obtain the inorganic molecular sieve adsorbent composition with the decreased resistivity.

Disclosed herein is a copper-supported zeolite containing a zeolite having a framework structure including silicon atoms, phosphorus atoms, and aluminum atoms, and copper supported on the zeolite, wherein the copper-supported zeolite satisfies (1) to (3): (1) an amount of copper (in terms of copper atoms) supported on the copper-supported zeolite is 1.5% by weight or more and 3.5% by weight or less, (2) the copper-supported zeolite has an UV-Vis-NIR absorption intensity ratio of less than 0.35 as determined by a formula (I) below: Intensity (22,000 cm.sup.?1)/Intensity (12,500 cm.sup.?1) . . . (I), and (3) a silicon atom content of the copper-supported zeolite satisfies a formula (II) below: 0.07?x?0.11 . . . . (II) where x represents a ratio of the number of moles of the silicon atoms to the total number of moles of the silicon atoms, the aluminum atoms, and the phosphorus atoms contained in the framework structure of the copper-supported zeolite.

Methods for electrocatalytic and thermocatalytic conversion of nitrate using PtxRuy/C catalysts are disclosed herein. The methods for electrocatalytic conversion of nitrate to ammonia can include contacting a nitrate containing source with an electrode comprising a PtxRuy/C catalyst while applying a potential sufficient to reduce nitrate to thereby convert nitrate present in the nitrate containing source to ammonia, wherein the PtxRuy/C catalyst comprises a carbon substrate having PtxRUy nanoparticles disposed thereon, and x is about 48 at % to about 90 at %, and y is 1x.

The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.

The present invention relates to a process for the regeneration of a catalyst comprising a titanium-containing zeolite, said catalyst having been used in a process for the preparation of an olefin oxide and having phosphate deposited thereon, said process for the regeneration comprising the steps: (a) separating the reaction mixture from the catalyst, (b) washing the catalyst obtained from (a) with liquid aqueous system; (c) optionally drying the catalyst obtained from (b) in a gas stream comprising an inert gas at a temperature of less than 300? C.; (d) calcining the catalyst obtained from (c) in a gas stream comprising oxygen at a temperature of at least 300? C.

One aspect of the present invention provides a method for preparing a ferrite metal oxide catalyst, comprising (a) preparing a precursor solution by dissolving a magnesium nitrate precursor and an iron nitrate precursor in a polar solvent, (b) forming a catalyst powder by spray-pyrolyzing the precursor solution into a reactor using a carrier gas, and (c) calcinating the catalyst powder in a reservoir after conveying the catalyst powder to the reservoir. The method may increase the activity and stability of a catalyst powder by additionally performing a step of calcinating the catalyst powder at a certain temperature for a certain period of time, and may increase the purity of the catalyst by reducing moisture and nitrate remaining in the catalyst. Also, when using the catalyst in an oxidative dehydrogenation of n-butene, the selectivity and purity of 1,3-butadiene may increase.

The present invention provides a process for producing hydrogen iodide. The process includes providing a vapor-phase reactant stream comprising hydrogen and iodine and reacting the reactant stream in the presence of a catalyst to produce a product stream comprising hydrogen iodide. The catalyst includes at least one selected from the group of nickel, cobalt, cobalt halides, iron, nickel oxide, nickel halides, copper, copper oxide, copper halides, cobalt oxide, ferrous chloride, ferric chloride, iron oxide, zinc, zinc oxide, zinc halides, molybdenum, tungsten, magnesium, magnesium oxide, and magnesium halides. The catalyst is supported on a support.