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Hydrocracking catalyst and preparation method therefor

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problems of low content and low activity, and achieve high catalytic performance. Active, high liquid hydrocarbon selectivity, acid weakening effect

Active Publication Date: 2017-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the catalyst of the invention, the heteropoly acid salt is uniformly dispersed in the carrier, and due to its weak acidity and low content, it shows high selectivity to liquid hydrocarbons, but its activity is relatively low

Method used

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  • Hydrocracking catalyst and preparation method therefor
  • Hydrocracking catalyst and preparation method therefor
  • Hydrocracking catalyst and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of Mo-Ni-P aqueous solution:

[0040] 2.2 g phosphoric acid H 3 PO 4 (concentration 85wt%) was dissolved in 80mL of water, then added 8.1g of molybdenum trioxide and 3.7g of basic nickel carbonate, heated to 100°C, stirred and refluxed for 2.0h, and filtered to 100mL to obtain Mo-Ni-P aqueous solution . where MoO 3 The concentration of NiO was 0.08 g / mL, that of NiO was 0.02 g / mL, and that of P was 0.006 g / mL.

[0041] (2) Preparation of catalyst:

[0042] 100mL Mo-Ni-P aqueous solution, 10.4g phosphotungstic acid, 87.9g hexadecyltrimethylammonium bromide and 123.7g citric acid were made into a mixed solution, and 182.4mL tetraethyl orthosilicate was added to the mixed solution , stirred for 2 hours, then stirred at 70°C until gelled, aged at room temperature for 12 hours, dried at 110°C for 8 hours, and then calcined at 450°C for 3 hours to prepare catalyst precursor A, which was then added to the high-pressure reaction In the still, heat up to 45...

Embodiment 2

[0048] (1) Preparation of Mo-Ni-P aqueous solution:

[0049] 3.0g phosphoric acid H 3 PO 4 (concentration 85wt%) dissolved in 80mL water, then add 10.1g molybdenum trioxide and 4.6g basic nickel carbonate, raise the temperature to 100°C and stir and reflux for 2.0h, filter and set the volume to 100mL to obtain Mo-Ni-P aqueous solution . where MoO 3 The concentration of NiO was 0.10 g / mL, that of NiO was 0.025 g / mL, and that of P was 0.008 g / mL.

[0050] (2) Preparation of catalyst:

[0051] 100mL Mo-Ni-P aqueous solution, 18.1g phosphotungstic acid, 140.0g hexadecyltrimethylammonium bromide and 73.8g citric acid were made into a mixed solution, and 174.9mL tetraethyl orthosilicate was added to the mixed solution , stirred for 2 h, then stirred at 70 °C until gelled, aged the gel at room temperature for 12 h, dried at 110 °C for 8 h, and then calcined at 450 °C for 3 h to prepare catalyst precursor A, then Add it into a high-pressure reactor, raise the temperature to 450°...

Embodiment 3

[0057] (1) Preparation of Mo-Ni-P aqueous solution:

[0058] 3.3 g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80 mL of water, then 12.1 g of molybdenum trioxide and 5.6 g of basic nickel carbonate were added, the temperature was raised to 100 °C, stirred and refluxed for 2.0 h, and filtered to 100 mL to obtain Mo-Ni -P aqueous solution. where MoO 3 The concentration of NiO was 0.12 g / mL, that of NiO was 0.03 g / mL, and that of P was 0.009 g / mL.

[0059] (2) Preparation of catalyst:

[0060] 100mL Mo-Ni-P aqueous solution, 27.6g phosphotungstic acid, 200.4g hexadecyltrimethylammonium bromide and 39.6g citric acid were made into a mixed solution, and 156.1mL tetraethyl orthosilicate was added to the mixed solution , stirred for 2 h, then stirred at 70 °C until gelled, aged at room temperature for 12 h, dried at 110 °C for 8 h, and then calcined at 450 °C for 3 h to prepare catalyst precursor A, and then added to In a high-pressure reactor, heat up to 4...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method therefor. The hydrocracking catalyst comprises an acidic component, hydrogenation metal components and a carrier, wherein the acidic component is an ammonium salt of heteropoly acid, the hydrogenation metal components comprise Mo and Ni, P serves as an assistant, and silicon oxide serves as the carrier. The invention further provides the preparation method for the hydrocracking catalyst. When the catalyst prepared by the method disclosed by the invention is applied to a hydrocracking reaction of long-chain alkanes, relatively high reaction activity and liquid hydrocarbon selectivity are achieved.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a highly active long-chain alkane hydrocracking catalyst and a preparation method thereof. Background technique [0002] In the oil refining industry, hydrocracking is an important process for producing high-quality light oil products from heavy oil. A transformation process of chemical reactions such as rearrangement and cleavage. The hydrocracking process can not only produce high-quality light oil products, but also has a high yield of liquid phase products. The core of its technology is the catalyst. The hydrocracking catalyst is a dual-function catalyst, which has both the acid function and the hydrogenation function. The acid function of the hydrocracking catalyst involved in US5,536,687, US5,447,623 and EP0028938A1 is mainly provided by molecular sieves, and the hydrogenation component is selected from Mo-Ni or W-Ni. The catalyst involved in C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/18B01J27/188B01J27/19B01J35/10C10G47/12
CPCC10G47/12B01J27/188B01J27/19B01J35/633B01J35/635B01J35/647B01J35/615
Inventor 金浩孙素华朱慧红杨光
Owner CHINA PETROLEUM & CHEM CORP
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