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Heavy aromatic hydrocarbon light catalyst, preparation method and application thereof

A technology for heavy aromatics and catalysts, which is applied in the field of heavy aromatics lightening catalysts and its preparation and application, and can solve the problem that heavy aromatics resources have not been rationally utilized.

Active Publication Date: 2009-12-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with foreign countries, domestic heavy aromatics resources have not been rationally utilized for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 15g of Na-type MCM-56 zeolite, and use 2N NH at 85±10°C 4 NO3 The carrier was ion-exchanged with 300 ml of the solution for 6 hours, filtered, washed with 200 ml of deionized water, dried, and calcined at 540° C. for 6 hours to obtain H-type MCM-56 zeolite. Mix 10g of H-type MCM-56 zeolite with 4.286g of γ-Al 2 o 3 (Shanghai Petrochemical Research Institute) mixed, added 40ml of 4wt% nitric acid aqueous solution, kneaded, extruded, dried at 80°C for 12 hours, and roasted at 540°C in air for 6 hours to obtain a carrier. Analytical pure nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O] 1.7550g and 12.8ml of water are made into impregnating solution, impregnating the above-mentioned 3g carrier in equal volume at room temperature for 24 hours, drying at 120°C for 12 hours, and roasting at 500°C in air for 6 hours to obtain the catalyst, and the obtained weight ratio is: NiO Catalyst A / Type H MCM-56 / Alumina = 15 / 70 / 30.

Embodiment 2

[0027] Take 15g of Na-type MCM-56 zeolite, and use 2N NH at 85±10°C 4 NO 3 The carrier was ion-exchanged with 300 ml of the solution for 6 hours, filtered, washed with 200 ml of deionized water, dried, and calcined at 540° C. for 6 hours to obtain H-type MCM-56 zeolite. Mix 10g of H-type MCM-56 zeolite with 4.286g of γ-Al 2 o 3 (Shanghai Petrochemical Research Institute) mixed, added 40ml of 4wt% nitric acid aqueous solution, kneaded, extruded, dried at 80°C for 12 hours, and roasted at 540°C in air for 6 hours to obtain a carrier. Analytical pure ammonium molybdate [(NH 4 ) 6 Mo 7 o 24 4H 2 O] 0.5565g and 13.5ml of water were made into an impregnating solution, and the above-mentioned 3g carrier was impregnated in an equal volume at room temperature for 24 hours, dried at 120°C for 12 hours, and roasted at 500°C in air for 6 hours to obtain the catalyst. The obtained weight ratio was: MoO 3 Catalyst B / Type H MCM-56 / Alumina = 15 / 70 / 30.

Embodiment 3

[0029] Take 15g of Na-type MCM-56 zeolite, and use 2N NH at 85±10°C 4 NO 3 The carrier was ion-exchanged with 300 ml of the solution for 6 hours, filtered, washed with 200 ml of deionized water, dried, and calcined at 540° C. for 6 hours to obtain H-type MCM-56 zeolite. Mix 10g of H-type MCM-56 zeolite with 4.286g of γ-Al 2 o 3 (Shanghai Petrochemical Research Institute) mixed, added 40ml of 4wt% nitric acid aqueous solution, kneaded, extruded, dried at 80°C for 12 hours, and roasted at 540°C in air for 6 hours to obtain a carrier. Analytical pure cobalt nitrate [Co(NO 3 ) 2 ·6H 2 O] 1.7497g and 12.45ml of water were made into an impregnating solution, and the above-mentioned 3g carrier was impregnated in an equal volume at room temperature for 24 hours, dried at 120°C for 12 hours, and roasted at 500°C in air for 6 hours to obtain the catalyst, and the obtained weight ratio was: CoO Catalyst C / Type H MCM-56 / Alumina = 15 / 70 / 30.

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PUM

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Abstract

The invention relates to a heavy aromatic hydrocarbon light catalyst, a preparation method and application thereof. In a composite carrier, H type MCM-56 zeolite is between 50 and 80 wt percent, Al2O3 is between 20 and 50 wt percent, metals or oxides thereof of tin, bismuth, lanthanum, molybdenum, nickel, chrome and cobalt are 3 to 20 wt percent, or platinum, palladium, rhenium or oxide thereof are 0.1 to 2wt percent. The catalyst is applicable to the light preparation of benzene, methylbenzene and dimethylbenzene by heavy aromatic hydrocarbon; and the catalyst has good catalytic effect on a hydrodealkylation light reaction of C9 heavy aromatic hydrocarbon, the transformation ratio of C9 aromatic hydrocarbon is 76.89 wt percent, the yield of BTX is 48.37 wt percent, the selectivity of the BTX is 80.50 mol percent, no phenylethane is generated in a product, and the dimethylbenzene has high content.

Description

technical field [0001] The present invention relates to a kind of aluminosilicate zeolite and IVA group, VA group, IIIB group, VIB group, VIIB group or VIII group metal component suitable for the C 9 + A catalyst for lightening heavy aromatics to produce benzene, toluene and xylene (BTX), a preparation method and application thereof. Background technique [0002] Heavy aromatics generally refer to C by-products in petroleum and coal processing 9 The main sources of the above aromatics are catalytic reforming units of oil refineries, wide-fraction catalytic reforming units of polyester raw material plants, by-products of pyrolysis gasoline and ethylene tar in ethylene units, and coal tar by-products of coal high-temperature coking, expressed as C 9 and C 10 mainly aromatics. C 9 + The reformed aromatics contain about 40% of trimethylene, 30% of methyl-ethylbenzene, mesitylene and mesitylene, and these components are very valuable organic chemical raw materials. At pres...

Claims

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Application Information

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IPC IPC(8): B01J29/064B01J29/076C10G45/12
CPCY02P20/52
Inventor 朱学栋申群兵朱子彬孔繁华陈曦李文琦张春光李瑞江
Owner PETROCHINA CO LTD
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