Catalyst for producing aromatics from binder-free methanol and preparation method thereof

A technology without binder and catalyst, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low BTX yield and low reactivity

Active Publication Date: 2016-09-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One of the technical problems to be solved by the present invention is the problem of low reactivity and low BTX yield in the process of producing aromatics from methanol, and a catalyst for producing aromatics from methanol is provided

Method used

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  • Catalyst for producing aromatics from binder-free methanol and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Take by weighing 2.8g polyethylene glycol, 4.0g P123, 16g concentration be the nitric acid solution of 1mol / L, 3.9g aluminum nitrate, 27.9g tetraethyl orthosilicate and 28g water mix, dissolve under stirring condition, And continue to hydrolyze for 2h. Then it was transferred to an airtight container, gelled and aged for 24 hours at 65°C, and then the gel was taken out and dried to obtain sample A1.

[0026]2) Weigh 7.0g sample A1, 0.3g HZSM-5 (SiO 2 / Al 2 o 3 Ratio=25) molecular sieve, 7.2g silica sol (SiO 2 Mass concentration 40%), 0.17g pseudo-boehmite, 0.3g scallop powder and 3.9g dilute hydrochloric acid solution (concentration is 1mol / L), after kneading evenly, adopt the mode of extrusion to make cylindrical particles, and obtain Sample B1.

[0027] 3) Take 1.5g of sample B1 and place it in the upper layer of the crystallization reaction kettle, place 4.0g of water and 1.0g of TPAOH in the lower layer, and crystallize at 160°C for 2 days under autogenous p...

Embodiment 2～6

[0030] Weigh the sample C1 prepared in Example 1, adjust the amount of zinc nitrate, and prepare catalysts with Zn oxide content of 1.2 parts, 2.4 parts, 3.6 parts, 14.5 parts and 20 parts respectively, which are denoted as MTA-2, MTA- 3. MTA-4, MTA-5, MTA-6.

Embodiment 7

[0032] 1) Weigh 10.0g sample A1, 0.1g HZSM-5 (SiO 2 / Al 2 o 3 ratio=38) molecular sieve, 2g fumed silica, 9g aluminum sol (Al 2 o 3 mass concentration 21%), 0.2g soluble starch, kneaded evenly, formed, and dried to obtain sample B2.

[0033] 2) Take 5g of sample B2 and place it in the upper layer of the crystallization reaction kettle, place 10g of water, 1g of NaOH, and 4g of triethylamine in the lower layer, and crystallize at 180°C for 20 hours under autogenous pressure conditions. The product is washed, dried and roasted to remove the template agent Then sample C2 was obtained.

[0034] 3) Using silver nitrate solution as the impregnation solution to load metal Ag on the sample C2. The sample was dried at 100°C for 20 hours and calcined at 480°C for 5 hours to obtain the methanol-to-aromatics catalyst MTA-7, in which the content of Ag oxide was 1.1 parts by mass.

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Abstract

The present invention relates to a binder-free methanol-to-aromatic hydrocarbon catalyst and a preparation method thereof, wherein problems of low reaction activity and low BTX (benzene, toluene and xylene) yield during a methanol-to-aromatic hydrocarbon process are mainly solved with the present invention. The technical scheme comprises that the catalyst comprises, by weight: a) 70-95 parts of binder-free ZSM-5 zeolite, b) 1-30 parts of at least the one oxide selected from Ag, Zn and Ga and loaded on the binder-free ZSM-5 zeolite, and c) 0-5 parts of at least the one oxide selected from Mo, Cu, La, P and Ce. With the technical scheme, the problems in the prior are well solved, and the catalyst can be used for methanol-to-aromatic hydrocarbon industrial production.

Description

technical field [0001] The invention relates to a methanol-to-aromatics catalyst and a preparation method thereof, in particular to a binder-free methanol-to-aromatics catalyst and a preparation method thereof. Background technique [0002] Aromatics, especially light aromatics BTX (benzene, toluene, xylene) is an important basic organic chemical material, its output and scale are second only to ethylene and propylene, and its derivatives are widely used in chemical products such as chemical fibers, plastics and rubber and the production of fine chemicals. In recent years, with the continuous development of petrochemical and textile industries, the demand for aromatics has been increasing. The current main sources of BTX are catalytic reforming and pyrolysis gasoline by-products, both of which use petroleum as the initial raw material for production. According to statistics, aromatics produced by petroleum routes in my country accounted for more than 85% of the total outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48C07C1/20C07C15/04C07C15/06C07C15/08
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 陈希强汪哲明肖景娴
Owner CHINA PETROLEUM & CHEM CORP
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