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Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems affecting the yield of target products, reducing catalyst selectivity, etc., and achieve high utilization rate, Effect of promoting interaction and increasing acid content

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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  • Hydrocracking catalyst and preparation method thereof
  • Hydrocracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Preparation of Mo-Co-P aqueous solution:

[0051] 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.

[0052] (2) Preparation of catalyst:

[0053] 80.4g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm) was added to 200mL cyclohexane solution containing 11.3g dodecyltrimethoxysilane, reacted at 50°C for 3.0h, dried at 70°C for 8h to obtain the catalyst Precursor A; then added to 200mL of 5# diesel oil, filtered after soaking for 30min, the obtained material was placed in a low-temperature reaction bath at 0°C, and then 150mL of an aqueous solut...

Embodiment 2

[0059] (1) Preparation of Mo-Co-P aqueous solution:

[0060] 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.

[0061] (2) Preparation of catalyst:

[0062] 53.4g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm) was added to 200mL cyclohexane solution containing 32.0g hexadecyltrimethoxysilane, reacted at 50°C for 3.0h, dried at 70°C for 8h to obtain the catalyst Precursor A; then added to 150mL of 0# diesel oil, soaked for 30min and then filtered, the obtained material was placed in a low-temperature reaction bath at -10°C, and then 150mL of an aqueou...

Embodiment 3

[0068] (1) Preparation of Mo-Co-P aqueous solution:

[0069] 7.6g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 20.7g of molybdenum trioxide and 9.4g 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 0.2g / mL, Co 2 o 3 The concentration of P is 0.05g / mL, and the concentration of P is 0.02g / mL.

[0070] (2) Preparation of catalyst:

[0071] 34.3g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, spherical shape, particle diameter 0.4mm~0.6mm) was added to 150mL cyclohexane solution containing 35.7g octadecyltrimethoxysilane, reacted at 50°C for 3.0h, dried at 70°C for 8h to obtain the catalyst Precursor A; then added to 150mL-10# diesel oil, filtered after soaking for 30min, the obtained material was placed in a low-temperature reaction bath at -20°C, and then 100mL of an aqueous soluti...

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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 and a carrier, and the acidic component is ammonium salt of a heteropolyacid. Also provided is a preparation method of the above-mentioned hydrocracking catalyst, the method includes modifying the alumina carrier, and then supporting the acidic component and the active component. When the catalyst obtained by the method of the invention is used in the hydrocracking reaction of long-chain alkanes, it exhibits relatively high reactivity and high selectivity for liquid hydrocarbons.

Description

technical field [0001] The invention belongs to the field of oil refining, and relates to a catalytic material and a preparation method thereof, in particular to a hydrogenation 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 involve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/188B01J27/19B01J35/10B01J37/02C10G47/12
Inventor 金浩朱慧红葛海龙孟兆会杨光孙素华杨涛
Owner CHINA PETROLEUM & CHEM CORP
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