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Catalyst and method for producing compound using same

A manufacturing method and catalyst technology, applied in the preparation of organic compounds, catalyst activation/preparation, carbon-based compound preparation, etc., can solve the problems of isobutene conversion rate increase, yield or selectivity decrease, etc., to achieve increased yield, The effect of improving process stability

Pending Publication Date: 2021-02-23
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, especially in the case of gas-phase catalytic oxidation reaction using isobutylene and tert-butanol as raw materials, there is a unique problem that maleic acid and terephthalic acid are produced as by-products in addition to methacrolein as the main product. Compounds with higher boiling points, and the reaction gas contains polymers and tar-like substances
In order to increase the catalyst activity, the temperature of the reaction bath is increased to increase the conversion of isobutylene. However, as listed in Non-Patent Document 1, it is known that methacrolein and / or methacrylic acid are generally in the region of high conversion of isobutylene. The yield or selectivity drops sharply

Method used

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  • Catalyst and method for producing compound using same
  • Catalyst and method for producing compound using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] [Example 1] (preparation of catalyst 1)

[0119] 100 parts by mass of ammonium heptamolybdate was completely dissolved in 380 parts by mass of pure water heated to 80°C (mother liquid 1). Next, 3.7 parts by mass of cesium nitrate was dissolved in 42 mL of pure water, and added to mother liquor 1. Next, 34 parts by mass of iron nitrate, 103 parts by mass of cobalt nitrate, and 10 parts by mass of nickel nitrate were dissolved in 78 mL of pure water heated to 60° C., and added to mother liquor 1 . Next, 17 parts by mass of bismuth nitrate was dissolved in an aqueous solution of nitric acid prepared by adding 4.4 parts by mass of nitric acid (60% by mass) to 18 mL of pure water heated to 60°C, and added to Mother Liquor 1 . The mother liquor 1 was dried by a spray drying method, and the obtained dry powder was precalcined at 440° C. for 5 hours. Add 5% by mass to the calcined powder thus obtained (the atomic ratio calculated from the input raw materials is Mo:Bi:Fe:Co:N...

Embodiment 2

[0120] [Example 2] (preparation of catalyst 2)

[0121] 100 parts by mass of ammonium heptamolybdate was completely dissolved in 380 parts by mass of pure water heated to 80°C (mother liquid 1). Next, 3.7 parts by mass of cesium nitrate was dissolved in 42 mL of pure water, and added to mother liquor 1. Next, 37 parts by mass of iron nitrate, 99 parts by mass of cobalt nitrate, and 11 parts by mass of nickel nitrate were dissolved in 78 mL of pure water heated to 60° C., and added to Mother Liquor 1 . Next, 21 parts by mass of bismuth nitrate was dissolved in an aqueous nitric acid solution prepared by adding 5.4 parts by mass of nitric acid (60% by mass) to 23 mL of pure water heated to 60° C., and added to Mother Liquor 1 . The mother liquor 1 was dried by a spray drying method, and the obtained dry powder was precalcined at 440° C. for 5 hours. Add 5% by mass to the calcined powder thus obtained (atomic ratio calculated from the input raw materials is Mo:Bi:Fe:Co:Ni:Cs=1...

Embodiment 3

[0122] [Example 3] (preparation of catalyst 3)

[0123] 100 parts by mass of ammonium heptamolybdate was completely dissolved in 380 parts by mass of pure water heated to 80°C (mother liquid 1). Next, 3.7 parts by mass of cesium nitrate was dissolved in 42 mL of pure water, and added to mother liquor 1. Next, 37 parts by mass of iron nitrate, 99 parts by mass of cobalt nitrate, and 11 parts by mass of nickel nitrate were dissolved in 78 mL of pure water heated to 60° C., and added to Mother Liquor 1 . Next, 17 parts by mass of bismuth nitrate was dissolved in an aqueous solution of nitric acid prepared by adding 4.4 parts by mass of nitric acid (60% by mass) to 18 mL of pure water heated to 60°C, and added to Mother Liquor 1 . The mother liquor 1 was dried by a spray drying method, and the obtained dry powder was precalcined at 440° C. for 5 hours. Add 5% by mass to the calcined powder thus obtained (atomic ratio calculated from the input raw materials is Mo:Bi:Fe:Co:Ni:Cs=...

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Abstract

A catalyst that contains molybdenum (Mo) as an essential element and includes other catalytically active ingredients, in which the constituent elements satisfy relationship (cI): 0.44<=Sigma{(MoIE-XIE)*XC}<=1.53. In relationship (cI), XIE represents the first ionization energy (eV) of each of the elements other than molybdenum, MoIE represents the first ionization energy (eV) of molybdenum, and XCrepresents the atomic proportion of the element relative to the molybdenum, the proportion of which is taken as 12. In cases when (MoIE-XIE) is smaller than 0, the value is regarded as 0 in the calculation.

Description

technical field [0001] The present invention relates to a novel catalyst capable of obtaining a target product with high activity and a high yield, and particularly relates to a catalyst capable of being stable and stable even in a region where the catalyst activity is high when producing an unsaturated aldehyde, an unsaturated carboxylic acid, or a conjugated diene by oxidation. Catalyst produced in high yield. Background technique [0002] Methods for producing corresponding unsaturated aldehydes and unsaturated carboxylic acids using propylene, isobutene, t-butanol, etc. as raw materials, and gas-phase catalytic oxidation methods for producing 1,3-butadiene from butenes are widely practiced industrially. [0003] In particular, many reports have been made on methods of producing corresponding unsaturated aldehydes and unsaturated carboxylic acids from propylene, isobutylene, tert-butanol, etc. as a means of increasing their yields (eg, Patent Documents 1, 2, etc.). [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887B01J37/00B01J37/08C07B61/00C07C45/35C07C47/22C07C57/05
CPCB01J23/887B01J37/00B01J37/08C07B61/00C07C45/35C07C47/22
Inventor 奥村成喜杉山元彦福永诚一郎酒井秀臣
Owner NIPPON KAYAKU CO LTD
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