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High-selectivity hydrocracking catalyst and preparation method thereof

A hydrocracking, high-selectivity technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem of affecting the yield of target products and reducing catalyst selection. To achieve the effect of high selectivity, reducing possibility and increasing acid content

Active Publication Date: 2019-06-25
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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  • High-selectivity hydrocracking catalyst and preparation method thereof
  • High-selectivity hydrocracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Preparation of Mo-Co-P aqueous solution:

[0050] 1.9g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 5.2g of molybdenum trioxide and 1.9g 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 0.05g / mL, Co 2 o 3 The concentration of P is 0.01g / mL, and the concentration of P is 0.005g / mL.

[0051] (2) Preparation of catalyst:

[0052] Measure 100mL Mo-Co-P aqueous solution and add it to 80.4g alumina carrier (pore volume is 0.70mL / g, specific surface area is 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm), mixed evenly and dried at 70°C for 4h, then heated to 110°C and dried for 4h to prepare catalyst precursor A; then added to 200mL containing 11.3g dodecyl In the cyclohexane solution of trimethoxysilane, react at 50°C for 3.0h, and dry at 70°C for 8h to obtain catalyst precursor B; ℃ l...

Embodiment 2

[0058] (1) Preparation of Mo-Co-P aqueous solution:

[0059] 3.8g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 12.4g of molybdenum trioxide and 4.7g 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 0.025g / mL, and the concentration of P is 0.01g / mL.

[0060] (2) Preparation of catalyst:

[0061] Measure 100mL Mo-Co-P aqueous solution and add it to 60.0g alumina carrier (pore volume is 0.70mL / g, specific surface area is 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm), mixed evenly and dried at 70°C for 4h, then heated to 110°C and dried for 4h to prepare catalyst precursor A; then added to 200mL containing 23.6g dodecyl In the cyclohexane solution of trimethoxysilane, react at 50°C for 3.0h, and dry at 70°C for 8h to obtain catalyst precursor B; ℃ ...

Embodiment 3

[0067] (1) Preparation of Mo-Co-P aqueous solution:

[0068] 4.5g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 15.5g of molybdenum trioxide and 5.7g 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 0.15g / mL, Co 2 o 3 The concentration of P is 0.03g / mL, and the concentration of P is 0.012g / mL.

[0069] (2) Preparation of catalyst:

[0070] Measure 100mL of Mo-Co-P aqueous solution and add it to 53.4g of alumina carrier (pore volume is 0.70mL / g, specific surface area is 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm), mixed evenly and dried at 70°C for 4h, then heated to 110°C and dried for 4h to prepare catalyst precursor A; then added to 200mL containing 32.0g hexadecyl In the cyclohexane solution of trimethoxysilane, react at 50°C for 3.0h, and dry at 70°C for 8h to obtain catalyst precursor...

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Abstract

The invention discloses a high-selectivity hydrocracking catalyst and a preparation method thereof, wherein the catalyst comprises an acidic component, a hydrogenation metal component, an auxiliary agent and a carrier, the acidic component is a heteropolyacid ammonium salt, the hydrogenation metal component is one or a plurality of materials selected from Group VIB metals and / or Group VIII metals,and P is an auxiliary agent. The preparation method comprises: preparing and modifying a catalyst precursor, and loading an acidic component. According to the present invention, the catalyst obtainedby the method exhibits good reactivity and high liquid-state hydrocarbon selectivity in the hydrocracking reactions of long-chain alkanes.

Description

technical field [0001] The invention relates to a hydrogenation catalyst 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 catalyst involved in CN1389545A contains 20% to 40% of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J27/24B01J31/34C10G47/12
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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