Catalyst of methyl glycolate hydrogenation to produce ethylene glycol, and preparation method and application of the catalyst

A technology of methyl glycolate and catalyst, which is applied to the catalyst and preparation field of the hydrogenation of methyl glycolate to ethylene glycol, can solve the problems of poor stability of the catalyst, high cost of raw materials, easy high temperature sintering, etc. The effect of low product generation, low cost and not easy inactivation

Active Publication Date: 2019-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN102247847A discloses the catalyst and application of oxalate hydrogenation to ethylene glycol, but the oxalate hydrogenation process is relatively long and the cost of raw materials is high
Chinese patent CN102941094A discloses a catalyst composed of main metal Cu and auxiliary metal Ni, Mn or Co and a carrier. The catalyst has the advantages of high conversion rate of methyl glycolate and high selectivity of ethylene glycol, but the main catalyst The composition is copper metal, which is very easy to be sintered at high temperature, and the grain growth leads to poor catalyst stability

Method used

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  • Catalyst of methyl glycolate hydrogenation to produce ethylene glycol, and preparation method and application of the catalyst
  • Catalyst of methyl glycolate hydrogenation to produce ethylene glycol, and preparation method and application of the catalyst

Examples

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Embodiment 1

[0040] Weigh 21.26g of lanthanum nitrate and dissolve it in 20ml of water to prepare solution I, weigh 100g of alumina and 40g of titanium oxide and add it to solution I to prepare mixture II, knead and dry mixture II with 3.5ml of dilute nitric acid and 65ml of water to prepare Obtain mixture III, roast mixture III at 1050 DEG C to obtain the lanthanum-modified carrier; take by weighing 64.47g of nickel nitrate and 26.78g of cobalt nitrate and dissolve in 60ml of water to obtain solution IV, take by weighing 2.5g of ethylenediamine and Dissolve 5g of polyethylene glycol-2000 in 12ml of ethanol to make solution V; place solutions IV, V and the previously prepared carrier in a crystallization kettle for aging at 60°C for 4 hours, and then adjust the pH of the crystallization kettle with ammonium bicarbonate The value is 7.5. After filtering and washing, it is dried at 120°C for 2 hours and roasted at 350°C for decomposition. Introduce hydrogen at a space velocity of 1000m 3 / m ...

Embodiment 2

[0042] Weigh 10.63g of lanthanum nitrate and dissolve it in 20ml of water to make solution I, weigh 60g of alumina and 80g of zirconia and add it to solution I to make mixture II, knead and dry mixture II with 5ml of dilute nitric acid and 52ml of water to prepare Mixture III, roast mixture III at 1100°C to obtain a lanthanum-modified carrier; weigh 79.83g of nickel nitrate and 19.01g of copper nitrate and dissolve them in 60ml of water to prepare solution IV, weigh 3.1g of P123 and 1.8g of polyethylene Diol-2000 was dissolved in 15ml ethanol to make solution V; solution IV, V and the previously prepared carrier were placed in a crystallization kettle for aging at 90°C for 3 hours, and then ammonium bicarbonate was used to adjust the pH of the crystallization kettle to 9.0. After filtering and washing, dry at 120°C for 2 hours, and roast and decompose at 390°C. Introduce hydrogen at a space velocity of 1000m 3 / m 3 h -1 Under the conditions, the temperature was programmed t...

Embodiment 3

[0044] Weigh 15.95g of lanthanum nitrate and dissolve it in 20ml of water to make solution I, weigh 135g of alumina and add it to solution I to make mixture II, knead and dry mixture II with 4.0ml of dilute nitric acid and 60ml of water to make mixture III , roasting mixture III at 1150°C to obtain a lanthanum-modified carrier; weigh 55.74g of nickel nitrate and 21.54g of zinc nitrate in 60ml of water to prepare solution IV, weigh 4.5g of TMB and 3.2g of ethylenediamine in Prepare solution V with 10ml of ethanol; place solutions IV, V and the previously prepared carrier in a crystallization tank for aging at 80°C for 4 hours, then use ammonium bicarbonate to adjust the pH of the crystallization tank to 8.0, filter and wash, and dry at 120°C 2h, 460 ℃ roasting decomposition. Introduce hydrogen at a space velocity of 1000m 3 / m 3 h -1 Under the conditions, the temperature was programmed to rise to 420°C, kept for 8 hours, and the catalyst was prepared after cooling down. Acc...

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Abstract

The invention relates to a catalyst of methyl glycolate hydrogenation to produce ethylene glycol, and a preparation method and an application of the catalyst. The catalyst includes, on the basis thatthe total weight of the catalyst is 100 parts, a) 5-25 parts of an active component selected from at least one of nickel of nickel oxide; b) 0.5-8 parts of an additive, selected from at least one metal or oxide thereof of barium, zinc, copper, calcium, magnesium, cobalt, manganese or molybdenum; c) 67-94.5 parts of a supporter, selected from at least one of aluminum oxide, titanium oxide and zirconium oxide after high-temperature roasting lanthanum modification. In the catalyst, the non-noble component nickel is low in cost, and the preparation method is relatively simple and controllable andis not liable to cause loss of active components. The catalyst is wide in temperature operation window and is not liable to be inactivated. The catalyst is used for methyl glycolate hydrogenation andhas high conversion rate of the methyl glycolate, is low in generation of side products, and has great stability.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst for hydrogenating methyl glycolate to ethylene glycol, a preparation method and application thereof. Background technique [0002] Ethylene glycol is an important organic chemical raw material. Ethylene glycol is widely used in the synthesis of polyester polyester, polyester resin, hygroscopic agent, plasticizer and labeling activity and so on. For example, ethylene glycol is an important raw material for the synthesis of polyethylene terephthalate (PET), and fiber-grade PET is widely used in the manufacture of clothing fabrics and industrial products; bottle-grade PET is widely used in packaging, electronic appliances, fields such as healthcare, construction and automobiles. In addition, ethylene glycol can also produce alkyd resin, glyoxal, etc., and can also be used as an antifreeze in industries such as automobiles and aviation. [0003] At present, the industrial produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/883B01J23/889B01J37/03B01J37/08B01J37/18C07C29/149C07C31/20
CPCY02P20/52
Inventor 唐国旗田保亮李宝芹
Owner CHINA PETROLEUM & CHEM CORP
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