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

Hydrocracking aromatic polymer and method for preparing aromatic hydrocarbon from heavy aromatic hydrocarbon

A technology of aromatic polymers and hydrocracking, which is applied in the preparation of liquid hydrocarbon mixtures, cracking of hydrocarbon oils, and treatment of hydrocarbon oils, etc., and can solve the problems of increasing the cost of catalyst production

Active Publication Date: 2022-04-29
EAST CHINA UNIV OF SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods inevitably use active metals, which increases the cost of catalyst production

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
  • Hydrocracking aromatic polymer and method for preparing aromatic hydrocarbon from heavy aromatic hydrocarbon
  • Hydrocracking aromatic polymer and method for preparing aromatic hydrocarbon from heavy aromatic hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Test material: polymer containing aromatic ring: polystyrene; polymer mass containing aromatic ring: 0.1 g; solvent: dodecane; solvent mass: 2 g; substrate concentration: 5%;

[0035] Catalyst: niobium oxide prepared by hydrothermal method, catalyst mass 0.1 g;

[0036] Test conditions: batch reactor; hydrogen pressure: 0.5 MPa; reaction temperature: 280°C;

[0037] Reaction time: 12 hours;

[0038] Test method: crush 0.1 g polystyrene in a pulverizer until it can pass through a 40-mesh sieve, and disperse the crushed polystyrene in 2 g dodecane, and then put the dispersion and 0.1 g niobium oxide into the In a 50 ml stainless steel autoclave, seal it, fill it with 0.5 MPa hydrogen, heat up to the required temperature of 280°C under rapid stirring, stop the reaction after 12 hours, cool, centrifuge the catalyst, and rectify the supernatant to obtain the product benzene, Ethylbenzene, cumene, indene and substituted indene, the molar yield of benzene can reach 40%.

Embodiment 2

[0040] The only difference from Example 1 is that the catalyst is niobium phosphate.

Embodiment 3

[0042] The only difference from Example 1 is that the catalyst is niobium silicon mixed oxide.

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 provides a metal-site-free method for preparing aromatic hydrocarbon by hydrocracking aromatic polymer and heavy aromatic hydrocarbon by dissociating hydrogen through an oxide, which comprises the following steps of: reacting the aromatic polymer with a catalyst in the presence of hydrogen at the temperature of below 350 DEG C; and rectifying and separating reaction products to obtain aromatic hydrocarbons. The catalyst contains at least one of niobium oxide, niobium phosphate, a niobium-silicon mixed oxide, a niobium-aluminum mixed oxide and a porous carbon-niobium material.

Description

technical field [0001] The invention relates to a method for preparing aromatic hydrocarbons by hydrocracking polymers containing aromatic rings and heavy aromatic hydrocarbons, and belongs to the technical field of carbon resource utilization. Background technique [0002] Lignin in biomass, as well as aromatic plastics known as white pollution, are rich in aromatic ring structures, and their conversion into human-usable, clean energy is a very promising strategy. Since lignin and aromatic plastics are polymers with large molecular weight and high rigidity, it is difficult to catalytically degrade them into usable small molecule fine chemicals. At present, the utilization of lignin and aromatic plastics is generally processed by pyrolysis / cracking, which usually requires high temperatures above 500°C (CN106947509A, CN103484142A), which has the problems of low yield and selectivity, and is difficult to industrialize. A further utilization method is to use a specific carrier...

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): C10G47/04C10G3/00
CPCC10G47/04C10G3/44C10G2300/10C10G2400/30C10G2300/44C10G2300/70C10G2300/1096Y02P30/20Y02P20/52
Inventor 王艳芹周浩陈璐郭勇刘晓晖龚学庆
Owner EAST CHINA UNIV OF SCI & TECH
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