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

Preparation method of n-alkane hydroisomerization catalyst

A technology for hydroisomerization and n-paraffin, which is applied in the field of hydrogenation catalyst preparation, can solve the problems of secondary destruction of active metals and supports, catalyst catalytic performance decline, water and energy consumption, etc., and achieves easy control and convenient operation. , the effect of maintaining catalytic activity

Active Publication Date: 2018-11-16
中国中化股份有限公司 +2
View PDF11 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods consume water and energy, and are easy to introduce other pollution, causing secondary damage to the active metal and the carrier, pollution, and even a decline in the catalytic performance of the catalyst.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of n-alkane hydroisomerization catalyst
  • Preparation method of n-alkane hydroisomerization catalyst

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] A preparation method for a n-alkane hydroisomerization catalyst, specifically comprising the following steps:

[0027] (1) Roast the molecular sieve at 550 °C for 4 hours in the air atmosphere of the muffle furnace to remove the residual template agent;

[0028] (2) Mix the molecular sieve treated in step (1) with the binder according to the mass ratio of (60% - 80%): (20% - 40%) on a dry basis for 15 minutes until uniform, and the concentration is 0.5 ~ 5 wt % nitric acid and deionized water, kneaded evenly, extruded into a cylindrical carrier with a diameter of 2.0 mm, dried at 120 °C for 24 hours at room temperature, and then calcined in air atmosphere; the calcined carrier was heated at 120 ℃ drying for 12 hours, cooled to room temperature;

[0029] (3) Add Group VIII metal salts to 2 wt% nitric acid, stir until the solids are completely dissolved, and obtain an impregnation solution;

[0030] (4) Immerse the carrier obtained in step (2) in the impregnating soluti...

Embodiment 1

[0037] (1) The SAPO-11 molecular sieve was calcined at 550 °C for 4 hours under the air atmosphere of the muffle furnace to remove the residual template agent;

[0038](2) Mix the SAPO-11 molecular sieve treated in step (1) and pseudo-boehmite at a dry basis mass ratio of 75%: 25% for 15 minutes until uniform, and add nitric acid and deionized water with a concentration of 3 wt%. , kneaded evenly, extruded into a cylindrical carrier with a diameter of 2.0 mm, dried at 120 °C for 24 hours at room temperature, and then roasted in air atmosphere; the roasted carrier was dried at 120 °C for 12 hours, Cool to room temperature;

[0039] (3) will H 2 PtCl 6 The metal salt was added to 2 wt% nitric acid and stirred until the solid was completely dissolved to obtain a Pt-containing impregnating solution;

[0040] (4) Using an equal-volume impregnation method, impregnate the carrier obtained in step (2) into the Pt-containing impregnation solution obtained in step (3), and after impr...

Embodiment 2

[0044] (1) The SAPO-11 molecular sieve was calcined at 550 °C for 4 hours under the air atmosphere of the muffle furnace to remove the residual template agent;

[0045] (2) Mix the SAPO-11 molecular sieve treated in step (1) and pseudo-boehmite at a dry basis mass ratio of 75%: 25% for 15 minutes until uniform, and add nitric acid and deionized water with a concentration of 3 wt%. , kneaded evenly, extruded into a cylindrical carrier with a diameter of 2.0 mm, dried at 120 °C for 24 hours at room temperature, and then roasted in air atmosphere; the roasted carrier was dried at 120 °C for 12 hours, Cool to room temperature;

[0046] (3) will H 2 PtBr 6 The metal salt was added to 2 wt% nitric acid and stirred until the solid was completely dissolved to obtain a Pt-containing impregnating solution;

[0047] (4) Using an equal-volume impregnation method, impregnate the carrier obtained in step (2) into the Pt-containing impregnation solution obtained in step (3), and after imp...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of an n-alkane hydroisomerization catalyst. The catalyst is prepared from one or more one-dimensional ten-membered ring mesoporous molecular sieves by kneading, extruding, granulating and supporting one or more group VIII metals. According to the preparation method, wet air containing 1wt%-10wt% of water is used as a medium in the catalyst roasting stage, and the problem of reduced isoparaffin selectivity of the catalyst due to halogen residues caused by halogen-containing metal salt used during metal supporting is solved. Compared with the catalystprepared with the traditional roasting method, the long-chain n-alkane hydroisomerization catalyst prepared with the method can increase the yield of isomerization products by 5% or more while maintaining the catalytic activity, and is convenient to operate and easy to control.

Description

[0001] This case is a priority application of [0002] The application number of the original application: 201810498744.9 [0003] Filing date of the original application: 2018-5-23 [0004] Invention title of the original application: a method for preparing a catalyst for the hydroisomerization of n-paraffins. technical field [0005] The invention belongs to the technical field of preparation of hydrogenation catalysts, and in particular relates to a preparation method of a catalyst for hydroisomerization of normal alkanes. Background technique [0006] In recent years, with the rapid development of modern industry, the quality requirements of lubricating oil for base oil have been increasing. Early solvent dewaxing and catalytic dewaxing can no longer meet the requirements of high-quality lubricating base oils. The heterogeneous pour point depressing technology developed in the 1980s has special advantages in preparing base oils with low pour point and high viscosity i...

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
IPC IPC(8): B01J29/85C10G45/60
CPCC10G45/60B01J29/85
Inventor 翟庆阁刘长坤史顺祥张景云
Owner 中国中化股份有限公司
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