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

Hydrogenation catalyst and preparation method thereof and preparation method of tetrahydrofurfuryl alcohol

A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as increased cost and separation difficulty, increased production cost, increased risk, etc., to reach the price Low cost, reduced operating costs, and reduced intermediate steps

Active Publication Date: 2019-04-19
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is in order to overcome existing in the prior art and adopt unstable skeleton nickel catalyst, increase the danger in the production process; Adopt noble metal catalyst, improve production cost; Adopt alcohol as solvent, increase the cost and the cost of reaction Difficulty in separation; a large amount of water is used as a solvent, and a large amount of waste water polluting the environment is produced. A hydrogenation catalyst and its preparation method and a preparation method of tetrahydrofurfuryl alcohol are provided

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
  • Hydrogenation catalyst and preparation method thereof and preparation method of tetrahydrofurfuryl alcohol

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] In a second aspect, the present invention provides a method for preparing a hydrogenation catalyst, wherein the method comprises: co-processing a mixed aqueous solution containing a silicon oxide precursor, a nickel oxide precursor, a calcium carbonate precursor, and a zirconia precursor precipitation, and the resulting precipitate was dried and roasted.

[0022] In the present invention, the mixed aqueous solution can be prepared in a conventional preparation manner in the art, preferably first preparing an aqueous solution containing a silicon oxide precursor, an aqueous solution containing a nickel oxide precursor, an aqueous solution containing a calcium carbonate precursor, and an aqueous solution containing a Aqueous solutions of zirconia precursors, and then measure the required solutions separately and mix them.

[0023] In the present invention, preferably, the reaction conditions of the co-precipitation include: a temperature of 40-70° C., and a pH value of 6-...

Embodiment 1-7

[0044] Prepare 25% by weight of acidic silica sol, 1.5M Ni(NO 3 ) 2 ·8H 2 O. solution, 1.5M Ca(NO 3 ) 2 4H 2 O and 1.5M ZrOCl 2 ·8H 2 O spare.

[0045] Accurately measure the above four solutions according to the component content of the catalyst to form a silicon-nickel-calcium-zirconium mixed solution, wherein the amount of each solution makes the content of each component in the final prepared catalyst meet the values ​​shown in Table 1. Add 100mL of deionized water into the reactor, and under continuous stirring, add the silicon-nickel-calcium-zirconium mixed liquid and 1M sodium carbonate solution into the reactor in parallel to control the reaction pH value to 8.5, and at the same time, the reaction liquid The temperature rises to 60°C, after the feeding is completed, continue to heat and stir for 1 hour, filter, dry at 110°C for 12 hours, and then roast in a muffle furnace at 500°C for 4 hours to obtain a catalyst powder sample, and add Zhan catalyst to the obtai...

Embodiment 8-14

[0055] React in a stainless steel reactor to prepare tetrahydrofurfuryl alcohol. Specifically, the hydrogenation catalyst and furfural / water solution (furfural concentration is 70% by weight) will be selected from the hydrogenation catalyst prepared in the above-mentioned examples 1-7 to react, and the reaction temperature 140℃, hydrogen pressure 4MPa, liquid hourly space velocity 0.1hr -1 , the hydroaldehyde molar ratio is 1. After the reaction was stable, the reaction result was analyzed by gas chromatography, and the conversion rate of furfural and the selectivity of tetrahydrofurfuryl alcohol were shown in Table 2 below.

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 hydrogenation catalyst and its preparation method and a preparation method of tetrahydrofurfuryl alcohol. The hydrogenation catalyst comprises 30-70% by weight of SiO2, 10-50% by weight of NiO, 2-15% by weight of CaCO3 and 1-8% by weight of ZrO2. The preparation method of the hydrogenation catalyst comprises the following steps: conducting coprecipitation on a mixed aqueous solution containing a silicon oxide precursor, a nickel oxide precursor, a calcium carbonate precursor and a zirconia precursor, and drying and roasting the obtained precipitate. The preparation method of tetrahydrofurfuryl alcohol comprises the following step: in the presence of the above hydrogenation catalyst, a furfural aqueous solution is subjected to a hydrogenation reaction. The hydrogenation catalyst of the invention has high activity and selectivity and is low-priced, is applicable to continuous preparation of furfuryl alcohol to reduce the operation cost, and is still highly-efficient in reacting under high concentration of the furfural solution, thereby reducing wastewater emission. In addition, the preparation is simple, intermediate steps are reduced, and costs are lowered.

Description

technical field [0001] The invention relates to the field of tetrahydrofurfuryl alcohol production, in particular to a hydrogenation catalyst, a preparation method thereof and a preparation method of tetrahydrofurfuryl alcohol. Background technique [0002] Tetrahydrofurfuryl alcohol is an important chemical raw material with a wide range of uses, not only as an important organic synthesis intermediate for the synthesis of succinic acid, glutaric acid, tetrahydrofuran, lysine, long-acting vitamins, furan and pyridine , and is an excellent solvent, plasticizer, decolorizer and deodorant. [0003] At present, tetrahydrofurfuryl alcohol is mainly produced industrially through a two-step process. First, furfural is subjected to selective hydrogenation to obtain furfuryl alcohol, and then further selective hydrogenation of furfuryl alcohol is used to prepare tetrahydrofurfuryl alcohol. But because of higher unit consumption (industrial production 1 ton of tetrahydrofurfuryl alco...

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): B01J27/232C07D307/12
CPCC07D307/12B01J27/232B01J37/03
Inventor 冯海强赵开径朱跃辉高继东
Owner CHINA PETROLEUM & CHEM CORP
Features
  • Generate Ideas
  • 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