Vanadium-phosphorus oxide and preparation method thereof

A technology of vanadium phosphorus oxide and concentrated phosphoric acid, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve the effects of easy addition or removal, continuous preparation process, and improved reaction efficiency

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the prior art, the preparation of VPO catalyst precursor using the principle of reaction engineering and ebullating bed technology has not been reported in the literature.

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
  • Vanadium-phosphorus oxide and preparation method thereof
  • Vanadium-phosphorus oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] exist figure 1 In the ebullating bed reactor shown, 30.0 g of vanadium pentoxide; 690 mL of mixed solution of isobutanol and benzyl alcohol is added through feed port 1, and the volume ratio of isobutanol / benzyl alcohol is 10:1. Will N 2 It is blown into the reactor from the feed port 2 to keep the reaction liquid and solid particles in a "boiling" tumbling state. Raise the reaction temperature and keep it at 110±2°C, and keep the reaction time for 3 hours; then feed 38.0 g of concentrated phosphoric acid with a concentration of 85% into the reactor from feed port 1, and the phosphorus / vanadium molar ratio is 1.0. Continue to keep the "boiling" reaction for 6 hours, and the reaction is completed and discharged from the reaction material outlet 3. After the reaction solution was cooled to room temperature, it was filtered, and the filter cake was rinsed three times with a small amount of isobutanol, and then the filter cake was placed in an enamel dish and dried natura...

Embodiment 2

[0040] exist figure 1 In the ebullating bed reactor shown, add 30g of vanadium pentoxide, 0.5g of zirconium nitrate as auxiliary agent, 0.95g of nickel nitrate hexahydrate as auxiliary agent; 690mL of isobutanol and benzyl alcohol mixed solution, The volume ratio of benzyl alcohol is 15:1. Will N 2 It is blown into the reactor from the feed port 2 to keep the reaction liquid and solid particles in a "boiling" tumbling state. Raise the reaction temperature and keep it at 100±2°C, and keep the reaction time for 4 hours; then feed 35.5g of concentrated phosphoric acid with a concentration of 100% into the reactor from the feed port 1, and the phosphorus / vanadium molar ratio is 1.1, and continue to maintain " Boiling shape" was reacted for 6 hours, and the reaction was completed and discharged from the reaction material outlet 3. After the reaction solution was cooled to room temperature, it was filtered, and the filter cake was rinsed three times with a small amount of isobuta...

Embodiment 3

[0042] exist figure 1 In the ebullating bed reactor shown, 30.0 g of vanadium pentoxide; 690 mL of mixed solution of isobutanol and benzyl alcohol is added through feed port 1, and the volume ratio of isobutanol / benzyl alcohol is 20:1. Will N 2 It is blown into the reactor from the feed port 2 to keep the reaction liquid and solid particles in a "boiling" tumbling state. Raise the reaction temperature and keep it at 98±2°C, and keep the reaction time for 4 hours; then feed 34.0 g of concentrated phosphoric acid with a concentration of 95% into the reactor from feed port 1, and the phosphorus / vanadium molar ratio is 1.0. Continue to keep the "boiling" reaction for 8 hours, and the reaction is completed and discharged from the reaction material outlet 3. After the reaction solution was cooled to room temperature, it was filtered, and the filter cake was rinsed three times with a small amount of isobutanol, and then the filter cake was placed in an enamel tray and dried natural...

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 vanadium-phosphorus oxide and a preparation method thereof. Based on the volume of VOHPO4.0.5H2O, the content of the vanadium-phosphorus oxide is 75 to 99 percent; phosphorus and vanadium are in the molar ratio of 0.85 to 1.35; the particle size is 30 to 120 nm; the specific surface area of the vanadium-phosphorus oxide is 110 to 230 m<2>/g. The vanadium-phosphorus oxide prepared by the method disclosed by the invention has the characteristics of small grain size, large specific surface area, and centralized grain size distribution, and is suitable to serve as a precursor of a catalyst in a reaction for preparing maleic anhydride by oxidizing n-butane. According to the method, a mass transfer effect is good, the reaction efficiency is high, the reaction time is shortened, the production capacity is high, so that the method can be used for continuous production of the catalyst.

Description

technical field [0001] The invention relates to a vanadium-phosphorus oxide and a preparation method thereof. The vanadium-phosphorus oxide is suitable as a precursor of a catalyst in the reaction of n-butane oxidation to maleic anhydride. Background technique [0002] Maleic anhydride, referred to as maleic anhydride, also known as maleic anhydride, is an important organic chemical raw material and fine chemical product. It is currently the third largest anhydride in the world after phthalic anhydride and acetic anhydride. Its specific applications mainly include Production of unsaturated polyester resins, alkyd resins, pesticides, pharmaceuticals, coatings, inks, lubricating oil additives, paper chemicals, textile finishing agents, food additives and surfactants, etc. In addition, maleic anhydride can also be used as a raw material to produce a series of fine chemical products with wide applications, such as 1,4-butanediol, tetrahydrofuran, maleic acid, fumaric acid and te...

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 Applications(China)
IPC IPC(8): B01J27/198B82Y40/00
Inventor 薛冬吕振辉乔凯王海波宋丽芝勾连科
Owner CHINA PETROLEUM & CHEM CORP
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