Double bond saturation and hydrodeoxygenation catalyst and its preparation method and application

A deoxygenation catalyst, molybdenum oxide technology, applied in chemical instruments and methods, physical/chemical process catalysts, fatty acid hydrogenation, etc., can solve the problems of olefin double bond not fully saturated deoxygenation rate, complex catalyst preparation procedure, general catalyst activity, etc. , to achieve the effect of good hydrothermal stability, favorable for scale-up and industrial production, and uniform dispersion of active metals

Active Publication Date: 2020-09-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of supported metals, high loading capacity, complex production process, high cost, high pressure and hydrogen oil ratio, high energy consumption, incomplete saturation of olefinic double bonds and low deoxidation rate, and its catalyst activity is average.
China National Petroleum Corporation patent CN101270300A is a hydrodeoxygenation catalyst for the production of biodiesel, with alumina and titanium oxide as the carrier, nickel molybdenum or cobalt molybdenum as the active component, the catalyst is prepared by impregnation step by step, at 390 ° C The conversion rate of palm oil is 90%-99%. It can be seen that the catalyst preparation procedure is complicated, the reaction conditions are harsh, and the catalyst activity is average.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 9.1g magnesium aluminum spinel, 0.6g praseodymium oxide, 9.1g strontium oxide, 17.3g aluminum oxide, 0.2g methylcellulose, 1.1g citric acid, 0.5g squash powder, and add to 37.9g ​​deionized water Add 0.2g of nitric acid, then add 18.1g of alumina into deionized water, stir evenly, then knead with dry powder, extrude into a cylindrical shape, dry at 70°C for 8h, and roast at 500°C for 3h to obtain a shaped carrier.

[0028] The catalyst was prepared by an equal-volume co-impregnation method. 2.6g of basic nickel carbonate, 21.8g of molybdenum oxide, and 1.0g of ammonium phosphate were prepared as an aqueous solution, and the shaped carrier was immersed in the co-impregnation solution, aged for 10h, and dried at 95°C. After 10 hours, the catalyst was obtained by calcining at 450°C for 3.5 hours.

[0029]Pack 10.0ml of catalyst in a continuous flow fixed-bed reactor, vulcanize at 300°C for 5h, control the reaction temperature at 280°C, reaction pressure at 2.0MPa, reac...

Embodiment 2

[0031] Mix 4.5g magnesium aluminum spinel, 2.7g praseodymium oxide, 0.5g strontium oxide, 65.3g aluminum oxide, 3.7g methyl cellulose, 0.7g citric acid, 2.6g squash powder, and add to 70.6g deionized water Add 2.4g of nitric acid, then add 5.4g of alumina into deionized water, stir evenly, then knead with dry powder, extrude into a clover shape, dry at 80°C for 7h, and roast at 550°C for 3h to obtain a shaped carrier.

[0032] The catalyst was prepared by an equal volume co-impregnation method. 38.1g of nickel nitrate, 5.6g of ammonium tetramolybdate, and 7.8g of phosphoric acid were prepared as an aqueous solution, and the shaped carrier was immersed in the co-impregnation solution, aged for 12 hours, and dried at 100°C for 7 hours. , The catalyst was obtained by calcining at 500°C for 3h.

[0033] Pack 10.0ml of catalyst into a continuous flow fixed-bed reactor, vulcanize at 300°C for 5h, control the reaction temperature at 360°C, reaction pressure at 6.0MPa, reaction hydrog...

Embodiment 3

[0035] Mix 4.2g magnesium aluminum spinel, 0.4g praseodymium oxide, 0.8g strontium oxide, 16.8g aluminum oxide, 0.2g methyl cellulose, 0.3g citric acid, 0.4g squash powder, and add to 20.9g deionized water Add 0.2g of nitric acid, then add 5.6g of alumina into deionized water, stir evenly, then knead with dry powder, extrude into a clover shape, dry at 90°C for 8h, and roast at 600°C for 4h to obtain a shaped carrier.

[0036] The catalyst was prepared by the equal volume co-impregnation method. 4.0g nickel acetate, 3.8g ammonium heptamolybdate, and 0.5g phosphoric acid were prepared as an aqueous solution, and the shaped carrier was immersed in the co-impregnation solution, aged for 15h, and dried at 110°C for 6h , The catalyst was obtained by calcining at 550°C for 3h.

[0037] Fill 10.0ml of catalyst in a continuous flow fixed bed reactor, vulcanize at 300°C for 5h, control the reaction temperature at 380°C, reaction pressure at 4.0MPa, reaction hydrogen-oil ratio 800:1, re...

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PUM

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Abstract

The invention relates to a double bond saturation and hydrodeoxygenation catalyst. The catalyst contains the following components: 2.0-10.0omega% of nickel oxide, 5.0-30.3omega% of molybdenum oxide, 0.5-5.0omega% of phosphorus pentoxide, 5.0-15.0omega% of magnesium aluminate spinel, 1.0-3.0omega% of praseodymium oxide, 1.5-5.0omega% of strontium oxide and 33.0-85.0omega% of alumina. A preparation method comprises the following steps: firstly blending magnesium aluminate spinel, praseodymium oxide, strontium oxide and alumina and preparing into a carrier, then co-impregnating nickel and molybdenum active metal phosphorus solution, and finally carrying out ageing, drying and roasting treatment, so that the catalyst is prepared. The catalyst provided by the invention has double bond saturation and hydrodeoxygenation double functions and is low in production cost, simple in working procedure and easy to operate, so that the catalyst is applicable to preparation of a high-quality biodiesel fraction from various oil raw materials through hydrogenation.

Description

technical field [0001] The invention relates to a catalyst for double bond saturation and hydrodeoxygenation, its preparation method and application. It adopts non-noble metal as catalyst and prepares it by mixing and co-impregnation. The catalyst has high activity and good hydrothermal stability, and is suitable for the High-quality biodiesel fractions are prepared by hydrogenation of oil raw materials. Background technique [0002] As the consumption of fossil energy increases year by year, while the reserves of fossil resources decrease year by year, the world will face a crisis of energy shortage. The seriousness of pollution caused by the use of fuel, especially the frequent occurrence of photochemical smog, acid rain and various extreme climates has caused great harm to human health and life and property. Greenhouse gases such as carbon dioxide emitted by the use of fossil fuels are constantly destroying With ecological balance. Some international organizations, incl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19C11C3/12C10L1/02
CPCB01J27/19C10L1/02C10L2200/0476C11C3/126Y02E50/10
Inventor 王东军何玉莲李建忠王斯晗褚洪岭何昌洪王桂芝徐显明王伟众袁宗胜姜进宪邓旭亮贾云刚姜伟赵仲阳赵光辉董平李方伟张永军于部伟张忠涛刘春贵李瑞峰国海峰李瑞杨晓东朱丽娜崔锡红曾群英牛明邵荣兰洪梅汪涵
Owner PETROCHINA CO LTD
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