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A kind of non-precious metal isomerization catalyst and its preparation method and application

A non-precious metal and catalyst technology, applied in the field of non-precious metal catalysts and their preparation, can solve the problems of high catalyst cost, impact on economic benefits, high viscosity index, etc., and achieve low cost, high isomerization selectivity and good activity. Effect

Active Publication Date: 2016-01-20
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid carrier is mainly a molecular sieve or an oxide, which provides an acidic site for isomerization / cracking, and the shape selectivity of the one-dimensional tubular ten-membered ring channel molecular sieve can well inhibit the multi-branched isomer with high cracking activity The formation of isomerization effectively improves the selectivity of isomerization and the yield of monomethyl isomer, and can prepare lubricating oil with low freezing point and high viscosity index; the metal position provides the function of hydrogenation / dehydrogenation. Published patents, such as US6179994, EP0321302A2, US5565086A, EP0635556A1, and domestic disclosed patents, such as CN101052465A, CN1305871A, CN1792451A, CN102441416A, CN1448476A, etc., the metals used are the noble metals of Group VIII, Pt and Pd. , affecting the economic interests of related enterprises

Method used

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  • A kind of non-precious metal isomerization catalyst and its preparation method and application
  • A kind of non-precious metal isomerization catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare SAPO-11 molecular sieve according to the method described in patent CN101503201A: 50ml deionized water, 10ml phosphoric acid, 12g pseudoboehmite, 3.5ml tetraethyl orthosilicate, 10ml di-n-propylamine are mixed successively, stir well, and adjust the pH to 6.5, transferred to a polytetrafluoroethylene-lined reactor for crystallization at 180°C for 48 hours, cooled, washed, filtered, and dried to obtain molecular sieve powder, and roasted at 600°C for 5 hours to obtain SAPO-11 molecular sieve;

[0022] Composition of RaneyNi by final catalyst weight: V 2 o 5 =0.05:1, weigh a certain amount of NiAl 3 -Al, with a certain amount of V 2 o 5 Mix well mechanically, soak in 5.0(wt)% NaOH solution at 90°C for 6h, wash with distilled water until neutral, and dry to obtain (RaneyNi / V 2 o 5 ; Composition RaneyNi / V by final catalyst weight 2 o 5 : SAPO-11=5:1, weigh a certain amount of the above SAPO-11 molecular sieve, and RaneyNi / V 2 o 5 And safflower powder, water...

Embodiment 2

[0025] Prepare ZSM-22 molecular sieve according to the method described in patent CN103101924A: After mixing 10.4g deionized water and 0.07g aluminum sulfate evenly, add 0.22gKOH to it, stir and clarify, add 0.43g1,6-hexanediamine, under stirring Add 3g of tetraethyl orthosilicate, continue to stir until the solution evenly forms a silica-alumina gel, then place it in a reaction kettle for crystallization at 185°C for 24 hours, filter the product with suction, and dry it to obtain the original powder of ZSM-22 molecular sieve, 550°C Roasting for 6h to obtain ZSM-22 molecular sieve;

[0026] Composition RaneyNi / :Cr by final catalyst weight 2 o 3 =0.1:1, weigh a certain amount of NiAl 3 , with a certain amount of Cr 2 o 3 Mix well mechanically, soak in 50(wt)% NaOH solution at 100°C for 0.5h, wash with distilled water until neutral, and dry to obtain RaneyNi / Cr 2 o 3 ; Composition RaneyNi / Cr by final catalyst weight 2 o 3 : SAPO-11=4:1, weigh a certain amount of the abov...

Embodiment 3

[0029] Prepare SAPO-11 molecular sieve according to the method described in patent CN102381716A: weigh 10.85g pseudoboehmite, dissolve in 18.0g deionized water to make a solution, heat, stir for 0.5h; measure 9.7ml di-n-propylamine dropwise In the solution obtained in the previous step, stir for 2 hours, then weigh 10.3g of silica sol and add it to the solution, stir for 2 hours to obtain an aqueous slurry; when the aqueous slurry is heated to 80°C, add 16.45g of phosphoric acid dropwise to the aqueous In the slurry, pH=7.0, stirred for 1h, a colloidal mixture was obtained, and its molar composition was di-n-propylamine: Al 2 o 3 :P 2 o 5 : 0.6SiO2 2 : 50H 2 O, put the colloidal mixture at 190°C for 24h, cool and wash the filtrate, dry at 110°C for 12h, and then roast in a muffle furnace at 600°C for 4h to obtain SAPO-11 molecular sieve, the final composition is Al 2 o 3 :P 2 o 5 : SiO 2 =1:0.44:0.3.

[0030] Composition of RaneyNi:Fe by final catalyst weight 2 o 3...

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Abstract

The invention relates to a non-noble metal isomerization catalyst. The non-noble metal isomerization catalyst is composed of a ten-membered ring molecular sieve and raney nickel-loaded transition metal oxide with weight composition ratio of (0.2-5):1, preferentially, the weight composition ratio of transition metal oxide to raney nickel is (0.05-2):1. The non-noble metal isomerization catalyst is low in cost, is used for Fischer-Tropsch wax isomerization to prepare lubricating oil base oil, and has the advantages of good activity and high isomerism selectivity.

Description

technical field [0001] The invention relates to a catalyst, in particular to a non-precious metal catalyst for hydroisomerization, its preparation method and application. technical background [0002] With the rapid development of the automobile industry and the enhancement of environmental protection awareness, the market share of high-grade lubricating oil is increasing. The quality of base oil is a very important part of the production of high-grade lubricating oil, and high-quality base oil raw materials are in the Chronic structural shortages. [0003] The soft wax in the Fischer-Tropsch synthesis crude product means that the carbon number distribution is concentrated in C 25-50 The distillate section, which accounts for about 25-30% of the non-gaseous products, has a high degree of saturation and contains almost no sulfur, nitrogen, and aromatics. It is a rare high-quality raw material for the preparation of high-grade lubricating oil base oils. Fischer-Tropsch synth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/85B01J29/78B01J29/48C10G45/64
Inventor 李德宝刘岩侯博贾丽涛陈从标王俊刚
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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