A kind of hydrocracking catalyst and its preparation method

A hydrocracking and catalyst technology, applied in the field of petrochemical industry, can solve the problems of affecting the yield of target products, reducing catalyst selectivity, etc., and achieve the effects of reducing the possibility of secondary cracking reaction, high utilization rate and high selectivity

Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicotungstate loaded in the pores of the catalyst will cause a secondary cracking reaction of some products, which will reduce the selectivity of the catalyst and affect the yield of the target product.

Method used

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  • A kind of hydrocracking catalyst and its preparation method
  • A kind of hydrocracking catalyst and its preparation method
  • A kind of hydrocracking catalyst and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of Mo-Co-P aqueous solution:

[0053] 2.3g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 6.2g of molybdenum trioxide and 2.3g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.06g / mL, Co 2 o 3 The concentration of P is 0.012g / mL, and the concentration of P is 0.006g / mL.

[0054] (2) Preparation of catalyst:

[0055] Add 53.4g of pseudo-boehmite (0.85 on a dry basis) to 300g of water and form a suspension after beating; add 100mL of Mo-Co-P aqueous solution, 34.9g of octadecyltrimethylammonium bromide and 31.4g of phosphotungsten Acids were added to the suspension in sequence, stirred at 70°C until the solution was evaporated to dryness, dried at 110°C for 8.0 h, and then calcined at 400°C for 3.0 h to obtain catalyst precursor A; then added to 150 mL containing 36.3 g In the cycl...

Embodiment 2

[0061] (1) Preparation of Mo-Co-P aqueous solution:

[0062] 4.6g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 12.4g of molybdenum trioxide and 5.8g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.12g / mL, Co 2 o 3 The concentration of P is 0.03g / mL, and the concentration of P is 0.012g / mL.

[0063] (2) Preparation of catalyst:

[0064] Add 52.1g pseudo-boehmite (dry basis 0.85) into 300g water and form a suspension after beating; mix 100mL Mo-Co-P aqueous solution, 47.5g hexadecyltrimethylammonium bromide and 17.6g phosphotungsten Acids were added to the suspension in sequence, stirred at 70°C until the solution was evaporated to dryness, dried at 110°C for 8.0 h, and then calcined at 470°C for 3.0 h to obtain catalyst precursor A; then added to 150 mL containing 21.1 g In the cyclohexane solution o...

Embodiment 3

[0070] (1) Preparation of Mo-Co-P aqueous solution:

[0071] 6.9g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL water, then added 6.2g molybdenum trioxide and 8.6g basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, and filtered to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.18g / mL, Co 2 o 3 The concentration of P is 0.045g / mL, and the concentration of P is 0.018g / mL.

[0072] (2) Preparation of catalyst:

[0073] Add 47.2g pseudo-boehmite (dry basis 0.85) into 300g water and form a suspension after beating; mix 100mL Mo-Co-P aqueous solution, 60.6g dodecyltrimethylammonium bromide and 6.7g phosphotungsten Acids were added to the suspension in sequence, stirred at 70°C until the solution was evaporated to dryness, dried at 110°C for 8.0 h, and then calcined at 500°C for 3.0 h to obtain catalyst precursor A; then added to 150 mL containing 7.0 g In the cyclohexane solution of octadecyltrimet...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst comprises an acidic component, a hydrogenation metal component, an auxiliary agent and a carrier, and the acidic component is ammonium salt of a heteropolyacid. The preparation method of the hydrocracking catalyst includes preparing a catalyst precursor, modifying the precursor to prepare a carrier, and supporting acid components and hydrogenation metal components. The catalyst obtained by the method of the invention exhibits higher reactivity and liquid hydrocarbon selectivity when used in the hydrocracking reaction of long-chain alkanes.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a catalytic material and a preparation method thereof, in particular to a 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 cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J27/188B01J27/19B01J27/24B01J35/10C10G47/12
Inventor 金浩朱慧红孟兆会葛海龙杨光孙素华杨涛
Owner CHINA PETROLEUM & CHEM CORP
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