Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of metal phosphide-containing medium oil type hydrocracking catalyst

A metal phosphide, hydrocracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of insufficient catalyst stability and unstable heteropolyacid properties.

Active Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the properties of heteropolyacids are unstable, and they will gradually decompose and transform under high temperature conditions, and the stability of the catalyst is insufficient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare an ammonium dihydrogen phosphate solution with a weight concentration of 30%, impregnate the above-mentioned dried carrier T-1 with the prepared phosphorus-containing solution for 2 hours, dry at 120°C for 4 hours, and then use the impregnation solution containing tungsten and nickel Immerse at room temperature for 2 hours, dry at 120°C for 4 hours, and then reductively activate under hydrogen atmosphere. to 700°C, and kept at 700°C for 2 hours to prepare the catalyst C-1 of the present invention.

[0038] Through XRD analysis (under nitrogen protection condition), it can be seen that there are tungsten phosphide (WP) and nickel phosphide (Ni phosphide) in the catalyst of the present invention. 2 The characteristic diffraction peak of P) forms the phosphating state of the active metal.

Embodiment 2

[0043] Prepare an ammonium dihydrogen phosphate solution with a weight concentration of 40%, impregnate the carrier T-2 of Comparative Example 2 with the prepared phosphorus-containing solution for 2 hours, dry at 120°C for 5 hours, and then use the impregnating solution containing tungsten and nickel Immerse at room temperature for 2 hours, dry at 100°C for 6 hours, and then perform hydrogen activation in a hydrogen atmosphere. First, increase from room temperature to 350°C at a rate of 10°C / min, then increase from 350°C to 600°C at a rate of 1°C / min. °C, and kept at 600 °C for 4 hours to prepare the phosphating transition metal catalyst C-2.

Embodiment 3

[0048] Prepare a solution of ammonium dihydrogen phosphate with a concentration of 60%, impregnate the carrier T-3 of Comparative Example 3 with the prepared phosphorus-containing solution for 2 hours, dry at 110°C for 5 hours, and then use the impregnating solution containing tungsten and nickel at room temperature Immerse for 2 hours, dry at 110°C for 6 hours, and then perform activation treatment under hydrogen atmosphere, firstly increase from room temperature to 450°C at 8°C / min, then rise from 450°C to 650°C at a rate of 1°C / min , and kept at 650° C. for 4 hours to prepare the phosphating transition metal catalyst C-3.

[0049] Table 1 Physicochemical properties of catalyst supports.

[0050] Numbering T-1 T-2 T-3 Molecular sieve, wt% 12.0 7.0 4.0 Amorphous silica-alumina, wt% 25.0 53.0 30.0 Macroporous alumina, wt% 43.0 20.0 46.0 Binder, wt% 20.0 20.0 20.0 Pore ​​volume, ml / g 0.73 0.76 0.78 Specific surface area,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention describes a preparation method of a metal phosphide-containing medium oil type hydrocracking catalyst. The method comprises the following steps of (1) preparing a catalyst carrier containing a molecular sieve and an inorganic refractory oxide; (2) preparing a phosphorus compound containing solution, dipping the catalyst carrier obtained for the step (1), and then drying the dipped catalyst carrier; (3) preparing a dipping solution containing a VIB group metallic compound and a VIII group metallic compound; (4) dipping the material obtained from the step (2) with the dipping solution prepared by the step (3), and then drying the dipped material; and (5) performing hydrogen activation on the material obtained from the step (4), obtaining the hydrocracking catalyst used for hydrocracking reactions after the activation. The hydrocracking catalyst prepared by the method has outstanding usage performance, and is particularly suitable for a hydrocracking process of increasing middle distillates.

Description

technical field [0001] The invention relates to a method for preparing a hydrocracking catalyst. The catalyst has excellent hydrocracking performance, high activity and high selectivity for medium oil. Background technique [0002] The hydrocracking catalyst is a dual-functional catalyst with hydrogenation and cracking properties. Non-precious metal hydrocracking catalysts generally use Group VIB and Group VIII metals as hydrogenation components, and the cracking performance is mainly provided by acidic components. Crystalline zeolite and / or amorphous silica-alumina can be used. Simple use of amorphous silica-alumina, although the selectivity is high, but the activity is low, and the flexibility of operation is limited. In most hydrocracking catalysts, crystalline zeolite is used as the acidic component, or crystalline zeolite and amorphous Silica and aluminum are common acidic components. [0003] Most of the medium-oil hydrocracking catalysts currently used in industrial...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/26B01J29/78C10G47/20
Inventor 谷明镝黄薇
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com