Unlock instant, AI-driven research and patent intelligence for your innovation.

A zsm-5/mor composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation

A technology of ZSM-5 and composite zeolite, which is applied in the field of catalyst technology and chemical synthesis, can solve the problems of cumbersome preparation, etc., and achieve the effect of simple product treatment process, convenient operation, and promotion of synthesis

Active Publication Date: 2021-05-04
CHANGZHOU INST OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned cumbersome preparation problems, the present invention provides a method for effectively preparing monolithic ZSM-5 / MOR composite zeolite without introducing seed crystals

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
  • A zsm-5/mor composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation
  • A zsm-5/mor composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation
  • A zsm-5/mor composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The method for synthesizing a ZSM-5 / MOR composite zeolite monolith in this embodiment is: hydrolysis and polycondensation of 41.67g tetraethyl silicate in an aqueous solution of 6.0gpH=2 at room temperature for 15h to form a silicon treatment solution, and adding 0.273 g sodium aluminate to make a mixed solution, add 8mL of a 13M sodium hydroxide concentrated solution to make the mixed solution alkaline, and after aging for 20h under alkaline conditions, put the mixture in a reaction kettle and crystallize at 180°C After 60 hours, after cooling to room temperature, the product was suction filtered and dried to obtain a ZSM-5 / MOR composite zeolite monolith. Wherein, the reaction raw material mol ratio of the present embodiment is: 1SiO 2 :0.017Al 2 o 3 :3.62H 2 O.

[0035] figure 1 It is a physical photo of the prepared ZSM-5 / MOR composite zeolite monolith;

[0036] figure 2 It is the XRD (X-ray diffraction) pattern of the ZSM-5 / MOR composite zeolite monolithic p...

Embodiment 2

[0039] The method for synthesizing the ZSM-5 / MOR composite zeolite monolith in this embodiment is as follows: 41.67g of tetraethyl silicate is hydrolyzed and polycondensed for 15h at room temperature in an aqueous solution of 6.0gpH=2 to form a silicon treatment solution, and 0.364 g sodium aluminate to make a mixed solution, add 9.5mL molar concentration of 13M sodium hydroxide concentrated solution to make the mixed solution alkaline, after aging for 20h under alkaline conditions, put the mixture in the reaction kettle, crystallize at 180°C After 60 hours, after cooling to room temperature, the product was suction filtered and dried to obtain a ZSM-5 / MOR composite zeolite monolith. Wherein, the reaction raw material mol ratio of the present embodiment is: 1SiO 2 :0.02Al 2 o 3 :4.0H 2 O.

Embodiment 3

[0041]The method for synthesizing a ZSM-5 / MOR composite zeolite monolith in this embodiment is as follows: 41.67 g of tetraethyl silicate is hydrolyzed and polycondensed at room temperature in an aqueous solution of 6.0 gpH=2 for 15 hours to form a silicon treatment solution, and 0.234 g sodium aluminate to make a mixed solution, add 7mL of a 13M sodium hydroxide concentrated solution to make the mixed solution alkaline, age the mixture for 20 hours under alkaline conditions, put the mixture in a reaction kettle, and crystallize at 180°C for 60 hours , after cooling to room temperature, the product was suction filtered and dried to obtain a ZSM-5 / MOR composite zeolite monolith. Wherein, the reaction raw material mol ratio of the present embodiment is: 1SiO 2 :0.014Al 2 o 3 :3.38H 2 O.

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 ZSM-5 / MOR composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation, belonging to the field of catalyst technology and chemical synthesis. The method of the present invention avoids the use of adhesives and templates, the amount of water added to the system is small, the amount of waste liquid produced is small, and the crystallization time is short, which greatly reduces the production cycle, and the produced zeolite monolith can be directly used in production, which is very convenient practical. The obtained ZSM-5 / MOR composite zeolite monolith can efficiently catalyze the dehydration of glucose to prepare 5-hydroxymethylfurfural (HMF), and the conversion rate of glucose can reach 80%, the yield of HMF can reach 47%, and the production cost is low. Good prospects for industrial application.

Description

technical field [0001] The invention relates to the fields of catalyst technology and chemical synthesis, in particular to a ZSM-5 / MOR composite zeolite monolith for synthesizing 5-hydroxymethylfurfural and its preparation. Background technique [0002] With the decrease of fossil resources, environmental pollution and energy crisis, the development and utilization of renewable resources is imminent. Biomass is a renewable green resource with a wide range of sources. How to effectively and sustainably develop and utilize biomass to produce chemicals and fuels has become an urgent problem to be solved. As the most valuable biomass platform compound, 5-hydroxymethylfurfural (HMF) is a key intermediate between biomass raw materials and energy chemical industry. One-pot preparation of 5-hydroxymethylfurfural from glucose is a typical acid-catalyzed reaction, which needs to go through two steps: 1) isomerization of glucose to produce fructose; 2) dehydration of fructose to produ...

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 Patents(China)
IPC IPC(8): C01B39/02C01B39/40B01J29/80C07D307/48
CPCB01J29/18B01J29/40B01J29/80C01B39/023C01B39/40C01P2004/80C07D307/48
Inventor 张微薛浩南向梅邓瑶瑶张震威
Owner CHANGZHOU INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com