Carbonylation process for producing methyl acetate, by contacting dimethyl ether and carbon monoxide under carbonylation conditions in the presence of a catalyst having a zeolite of micropore volume of 0.01 ml/g. The zeolite is an as-synthesized organic structure directing agent-containing zeolite and contains at least one channel which is defined by an 8-member ring.

The invention relates to a novel zeolite catalysts, methods of producing the zeolite catalysts and a methods of using such catalyst, including for production of BTEX with improved yield, product selectivity and reduced char production. The present invention relates to novel mesoporous zeolite catalysts, as well as methods of producing the same. The present invention also relates to methods of producing renewable aromatic hydrocarbons using such catalysts.

The invention relates to a novel zeolite catalysts, methods of producing the zeolite catalysts and a methods of using such catalyst, including for production of BTEX with improved yield, product selectivity and reduced char production. The present invention relates to novel mesoporous zeolite catalysts, as well as methods of producing the same. The present invention also relates to methods of producing renewable aromatic hydrocarbons using such catalysts.

Described is a preparation method for zeolite molecular sieves by means of solid-state reactions without the usage of organic templates. The method comprises the following steps: grinding and mixing the solid raw materials comprising the silicon source, the aluminum source and the alkali source, transferring the obtained mixture into an autoclave, conducting the crystallization for a period of 5 hours-20 days at a temperature of 50-200 C. After filtering and drying the crystallized products, molecular sieves in a powder form can be obtained. The method provides different molecular sieves, including ZSM-5 zeolite, Beta zeolite, FAU zeolite, MOR zeolite, LTA zeolite, and GIS zeolite, with a high crystallinity and an adjustable Si/Al ratio within a certain range. The obtained products exhibit a high crystallinity and a high purity, and the method does not require the use of organic templates and solvents, which avoids unnecessary consumptions during the production, simplifies the synthetic process, and also increases the yield from the autoclave reactor.

Described is a preparation method for zeolite molecular sieves by means of solid-state reactions without the usage of organic templates. The method comprises the following steps: grinding and mixing the solid raw materials comprising the silicon source, the aluminum source and the alkali source, transferring the obtained mixture into an autoclave, conducting the crystallization for a period of 5 hours-20 days at a temperature of 50-200 C. After filtering and drying the crystallized products, molecular sieves in a powder form can be obtained. The method provides different molecular sieves, including ZSM-5 zeolite, Beta zeolite, FAU zeolite, MOR zeolite, LTA zeolite, and GIS zeolite, with a high crystallinity and an adjustable Si/Al ratio within a certain range. The obtained products exhibit a high crystallinity and a high purity, and the method does not require the use of organic templates and solvents, which avoids unnecessary consumptions during the production, simplifies the synthetic process, and also increases the yield from the autoclave reactor.

Disclosed is a catalyst composition and its 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 first zeolite having a constraint index of 3 to 12, a second zeolite comprising a mordenite zeolite synthesized from TEA or MTEA, at least one first metal of Group 10 of the IUPAC Periodic Table, and at least one second metal of Group 11 to 15 of the IUPAC Periodic Table, wherein said mordenite zeolite has a mesopore surface area of greater than 30 m.sup.2/g and said mordenite zeolite comprises agglomerates composed of primary crystallites, wherein said primary crystallites have an average primary crystal size as measured by TEM of less than 80 nm and an aspect ratio of less than 2.

A catalyst and process for the production of methyl acetate by contacting dimethyl ether and carbon monoxide in the presence of a catalyst which is a zeolite of micropore volume of 0.01 ml/g or less.

The present invention provides a mordenite zeolite having a mesopore surface area of greater than 30 m.sup.2/g and an average primary crystal size as measured by TEM of less than 80 nm, and methods of making the mordenite zeolite.

The present invention provides a mordenite zeolite having a mesopore surface area of greater than 30 m.sup.2/g and an average primary crystal size as measured by TEM of less than 80 nm, and methods of making the mordenite zeolite.

Disclosed is a catalyst composition and its 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 mordenite zeolite synthesized from TEA or MTEA, optionally at least one first metal of Group 10 of the IUPAC Periodic Table, and optionally at least one second metal of Group 11 to 15 of the IUPAC Periodic Table, wherein said mordenite zeolite has a mesopore surface area of greater than 30 m.sup.2/g and said mordenite zeolite comprises agglomerates composed of primary crystallites, wherein said primary crystallites have an average primary crystal size as measured by TEM of less than 80 nm and an aspect ratio of less than 2.