Solid catalyst for synthesizing butadiene from alcohol, and preparation and application thereof

A solid catalyst, butadiene technology, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, metal/metal oxides/metal hydroxide catalysts, etc., can solve the problems affecting the selectivity and life of butadiene, butadiene Low selectivity, short life, etc., to achieve the effects of sustainable energy development, easy scale-up, and long life

Inactive Publication Date: 2017-06-20
BEIJING UNIV OF CHEM TECH
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above method, the catalysts all have the problems of low butadiene selectivity and short life. The main reason is that the reaction is a multi-step series reaction, and high catalytic activity requires good coordination between the components. One is the active component The second is that the existi

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
  • Solid catalyst for synthesizing butadiene from alcohol, and preparation and application thereof
  • Solid catalyst for synthesizing butadiene from alcohol, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Preparation of solid catalyst

[0051] (1) Take 2.1g Zn(NO 3 ) 2 ·6H 2 O and 1g Na 2 SiO 3 9H 2 O, were dissolved in 100mL deionized water. Under stirring conditions, the Zn(NO 3 ) 2 The aqueous solution was added dropwise to Na 2 SiO 3 In the solution, heat up to 100°C, stir for 12 hours, dry the obtained white powder at 110°C overnight, and then roast at 500°C for 4 hours to obtain a zinc silicate active component with a Zn / Si molar ratio of 2.3:1 ;

[0052] (2) Add 5 g of Beta molecular sieve into 100 mL of isobutanol dissolved with 0.224 g of tantalum ethoxide, heat and stir until the solvent evaporates to dryness, and dry the obtained white powder at 160°C for 8 hours to prepare a Ta with a tantalum loading of 2wt%. - Beta active ingredient;

[0053] (3) Add the zinc silicate obtained in step (1) and the Ta-Beta active component obtained in step (2) into 100 mL of deionized water, stir at 35 °C for 2 h, and dry the obtained powder sample at 110 °C A...

Embodiment 2

[0057] The difference between embodiment 2 and embodiment 1 is that the catalytic reaction time is 30h, and all the other reaction conditions are the same as embodiment 1. The specific experimental results are shown in Table 1.

Embodiment 3

[0059] The difference between Example 3 and Example 2 is that the catalyst 5wt%Zn-2wt%Hf-Beta is prepared, abbreviated as 5Zn-2Hf-Beta, and the rest of the reaction conditions are the same as in Example 2. The specific experimental results are shown in Table 1.

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 relates to a solid catalyst for synthesizing butadiene from alcohol. The solid catalyst comprises a meso-porous silicon carrier, an oxidizing active ingredient and a condensation dehydration active ingredient, wherein the oxidizing active ingredient and the condensation dehydration active ingredient are loaded on the meso-porous silicon carrier; the oxidizing active ingredient contains transition metal silicate; the condensation dehydration active ingredient contains transition metal oxide; through being metered by the mass of the meso-porous silicon carrier, the content of the transition metal element in the oxidizing active ingredient is 0.5 to 25.0 weight percent; the content of the transition metal element in the condensation active ingredient is 0.5 to 10.0 weight percent. The invention also relates to a preparation method of the solid catalyst. The catalyst prepared by the invention has the advantages that the adverse influence between the transition metal elements in the oxidizing active ingredient and the condensation dehydration active ingredient is eliminated, so that the activity and the stability of the catalyst are improved; meanwhile, the catalyst has good water resistance.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a solid catalyst for synthesizing butadiene from ethanol and its preparation and application. Background technique [0002] At present, there are two main sources of butadiene in the world. One is from refinery C 4 Distillate dehydrogenation, this method is currently only used in a few countries with rich butane and butene resources. The other is the mixed C produced from the ethylene cracker 4 This method is cheap and economically advantageous, and it is currently the main source of butadiene in the world. However, in recent years, with the increasing depletion of petroleum resources as a non-renewable resource and the impact on the decline in 1,3-butadiene production brought about by shale gas exploitation, it is of great significance to develop new butadiene production process routes. [0003] The research on ethanol-catalyzed preparation of butadiene can be ...

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): B01J29/78B01J29/70B01J29/03B01J23/20B01J23/847B01J23/06B01J23/10B01J23/755C07C1/20C07C11/16
CPCB01J29/7815B01J23/06B01J23/10B01J23/20B01J23/755B01J23/8476B01J29/03B01J29/7057B01J2229/186C07C1/20C07C11/16
Inventor 谭天伟朱强强王斌
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap