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A kind of fe (iii) base catalyst and its preparation method and application

A catalyst and catalyst carrier technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low energy conversion efficiency and low oil yield, and achieve excellent catalyst activity, high activity, high dispersion effect

Active Publication Date: 2021-11-02
李大鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

China Coal Research Institute invention patent CN1579623A and CN1778871A authorized to disclose "a preparation method of a highly dispersed iron-based coal direct liquefaction catalyst" and "a highly dispersed iron-based catalyst for direct coal hydrogenation liquefaction", both of which are reported In order to uniformly mix the ferrous salt with coal powder, add strong / weak base to it, and then oxidize it through air or oxygen to obtain a nano-γ-FeOOH catalyst loaded on coal particles. This catalyst has good activity, but oil The product yield is low, making the energy conversion efficiency of the corresponding process low

Method used

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  • A kind of fe (iii) base catalyst and its preparation method and application
  • A kind of fe (iii) base catalyst and its preparation method and application
  • A kind of fe (iii) base catalyst and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0024] 31kg of industrial grade FeSO 4 ·7H 2 O. 30kg ZnSO 4 ·7H 2 O was dissolved in 2 tons of tap water, and 400kg of active Al was added to the resulting mixed salt solution 2 o 3The powder is made into a suspension, which is then introduced into the factory instrument air and stirred, and at the same time, a 2% ammonia solution is added dropwise to control the pH of the solution to 6.5, and the reaction is carried out at 20°C for 6 hours. Dry at 200°C for 24h, then bake at 800°C for 1h to obtain active Al 2 o 3 For the supported Fe(III)-based catalyst containing Zn(II), the loading amount of metal elements in the active component of the catalyst is 3.0% (based on the catalyst). The X-ray diffraction spectrum of the obtained catalyst is as follows figure 1 As shown, it can be seen from the spectrum that the catalyst is composed of spinel-structured ZnFe 2 o 4 , oxide ZnO and carrier Al 2 o 3 .

Embodiment 2

[0026] Analytical grade 1.98g FeCl 2 4H 2 O, 2.42g CoCl 2 ·6H 2 O, 1.32g MoCl 5 Dissolve in 20mL of deionized water, add 5.6g of activated carbon powder to the resulting mixed salt solution, then pass through oxygen and stir, while adding dropwise 3% sodium hydroxide aqueous solution and 6% sodium bicarbonate The mass ratio of the aqueous solution is a mixed solution of 1:1, the pH of the solution is controlled to be 9.7, and the reaction is carried out at 100°C for 8 hours, then suction-filtered and dried at 120°C for 12 hours, and then roasted at 350°C for 2 hours to obtain activated carbon-loaded containing The Fe(III)-based catalyst of Co(II) and Mo(VI), the loading amount of metal elements in the catalyst active component is 26.4% (calculated as catalyst). The X-ray diffraction spectrum of the obtained catalyst is as follows figure 2 It can be seen from the spectrogram that the catalyst is composed of Co(II), Mo(VI) and Fe(III) layered double metal oxides (LDO) and ...

Embodiment 3

[0028] 22g of analytical grade (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O, 14g Cu(SO 4 ) 2 ·5H 2 O, 17g ZnSO 4 ·7H 2 O was dissolved in 500 mL of deionized water, and 100 g of SiO was added to the resulting mixed salt solution 2 Mixed powder with Y-type molecular sieve (where SiO 2 The mass ratio with Y-type molecular sieve is 1:2), then feed into the air and stir, while adding dropwise the mass fraction of 3% potassium acetate aqueous solution and the mass fraction of 6% potassium hydroxide aqueous solution, the mass ratio is 1:1 Control the pH of the solution to be 8.0, react at 60°C for 2 hours, then suction filter and dry at 100°C for 12h, after drying, bake at 500°C for 4h to obtain SiO 2 With the Fe(III)-based catalyst containing Cu(II) and Zn(II) supported by Y-type molecular sieve, the loading amount of metal elements in the catalyst active component is 11.3% (calculated as catalyst). The X-ray diffraction spectrum of the obtained catalyst is as follows image 3 As show...

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Abstract

The invention discloses an Fe(III)-based catalyst and its preparation method and application. The active component of the catalyst is a multimetal composite oxide, and the multimetal composite oxide is a layered multimetal oxide, spinel One or more of multi-metal oxides and multiple composite oxides, and the carrier is carbon materials, molecular sieves, inorganic oxides, etc. The present invention uses Fe(II) salt and other divalent or polyvalent metal salts as raw materials, through process oxidation, self-assembles into a supported Fe(III) catalyst precursor in the next step under mild conditions, and roasts at high temperature to obtain Fe(III) base Catalyst, the structure of the catalyst is extremely stable and highly adjustable. The unique lattice positioning effect of the precursor makes the active component highly dispersed and has high activity at a low metal loading. The catalyst is easy to prepare and has both a carrier and an active group. It has multiple functions and is easy to scale up production. It can be used in kerosene co-refining, direct coal liquefaction, heavy and inferior oil lightening and coal tar hydrogenation reaction, showing excellent catalytic activity, and has broad application value.

Description

technical field [0001] The invention belongs to the technical fields of petroleum processing and coal chemical industry, and in particular relates to an Fe(III)-based catalyst and its preparation method and application. Background technique [0002] Compared with other metal-based catalysts, Fe(III)-based catalytic materials have obvious cost advantages, so they have important applications in petrochemical, coal chemical, and fine chemical industries. The variability in nature has made the research on this type of catalyst more and more extensive, and the degree of understanding from the molecular and atomic microscopic levels has also deepened. However, due to the variability of Fe(III)-based catalytic materials, this type of catalyst has more instability in the preparation process, which limits the market application of this type of catalyst. In the field of petrochemical and coal chemical industry, catalysts with metal active components such as Ni, Co, Mo, and W are main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J23/86B01J23/882B01J23/889B01J29/14B01J29/85C10G1/00C10G1/06C10G1/08C10G45/00C10G47/12C10G47/20C10G49/04C10G49/08
Inventor 李大鹏刘忠文
Owner 李大鹏
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