The present disclosure provides a modified catalyst, and preparation method and a method for producing aromatic hydrocarbons by aromatization of olefins using the modified catalyst. The modified catalyst comprises an acidic molecular sieve and an olefin aromatization active metal component, the total acid amount of the catalyst as measured by NH3-TPD method is not higher than 0.35mmo1/g, and ratio of the strong acid to weak acid is within a range of 0.8-1.2.

The present disclosure provides a modified catalyst, and preparation method and a method for producing aromatic hydrocarbons by aromatization of olefins using the modified catalyst. The modified catalyst comprises an acidic molecular sieve and an olefin aromatization active metal component, the total acid amount of the catalyst as measured by NH3-TPD method is not higher than 0.35mmo1/g, and ratio of the strong acid to weak acid is within a range of 0.8-1.2.

The present disclosure provides a modified catalyst, and preparation method and a method for producing aromatic hydrocarbons by aromatization of olefins using the modified catalyst. The modified catalyst comprises an acidic molecular sieve and an olefin aromatization active metal component, the total acid amount of the catalyst as measured by NH3-TPD method is not higher than 0.35mmo1/g, and ratio of the strong acid to weak acid is within a range of 0.8-1.2.

The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C.sub.8-C.sub.26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.

The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C.sub.8-C.sub.26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.

The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.

The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.

The present disclosure relates to a process for preparing linear alkyl benzne (LAB). The process comprises alkylation of benzene with an alkylating agent in the presence of an ionic liquid to obtain a first product mixture comprising a first organic phase and a first aqueous phase comprising first partially spent ionic liquid. The first organic phase is deacidified and fractionally distilled to obtain a fraction comprising LAB and a fraction comprising HAB. The fraction comprising HAB is transalkylated with benzene in the presence of the ionic liquid to obtain a second product mixture comprising a second organic phase comprising LAB and a second aqueous phase comprising second partially spent ionic liquid. The partially spent ionic liquids are regenerated, and reused in the steps of alkylation or transalkylation for at least 6 cycles.

The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C.sub.8-C.sub.26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.

The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C.sub.8-C.sub.26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.