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Solid phase synthetic method of hydroisomerization catalyst

A technology of hydroisomerization and solid-phase synthesis, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of wide application prospects, simple process, simple method and easy operation

Inactive Publication Date: 2018-06-05
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

There is no report on the synthesis of SAPO-11 for hydroisomerization catalyst by solid phase solvent-free method

Method used

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  • Solid phase synthetic method of hydroisomerization catalyst
  • Solid phase synthetic method of hydroisomerization catalyst
  • Solid phase synthetic method of hydroisomerization catalyst

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preparation example Construction

[0046] like Figure 16 As shown, the present embodiment provides a solid-phase synthesis method of a hydroisomerization catalyst, comprising steps:

[0047] like Figure 16 As shown, firstly carry out step 1) S11, mix solid-phase silicon source, aluminum source, templating agent with seed crystals and crystallize, filter, wash and roast the obtained sample to remove phosphorous source templating agent to prepare SAPO- 11 Molecular sieves.

[0048] As an example, in step 1), the process of mixing the solid-phase silicon source, aluminum source, template agent and seed crystal includes one of grinding and mixing, ball mill mixing and pulverizer pulverizing and mixing.

[0049] As an example, in step 1), the silicon source is SiO 2 , aluminum source is Al 2 o 3 , template agent is DPA·H 3 PO 4 or TPA·H 3 PO 4 , the molar ratio range of the silicon source, aluminum source, template agent is 0.01~0.5:1:0.2~0.9, wherein, DPA is di-n-propylamine, TPA is tri-n-propylamine, DP...

Embodiment 1

[0061] This embodiment provides a solid-phase synthesis method of a hydroisomerization catalyst, comprising steps:

[0062] Weigh 3.64g pseudo-boehmite, 0.3g fumed silica, 7.85g templating agent DPA·H 3 PO 4 , 0.20g SAPO-11 molecular sieve (seed crystal, seed), was added in the pulverizer and pulverized, so that the solid reactants were evenly mixed. Then the raw material was transferred to a 100ml polytetrafluoroethylene-lined stainless steel autoclave, and placed in an oven for crystallization at 160°C for 72h. The product was filtered and washed with deionized water, and then placed in an oven at 110°C for 12 hours. 1°C / min from 20°C to 550°C, keep for 5 hours, and cool naturally. The obtained sample was loaded with 0.5wt% Pt by chloroplatinic acid solution impregnation method and then dried at 100°C for 12 hours. After drying, the powder was placed in a muffle furnace and raised to 450°C at a rate of 1°C / min for 4 hours. The catalyst prepared above was reduced at 400° ...

Embodiment 2

[0066] This embodiment provides a solid-phase synthesis method of a hydroisomerization catalyst, comprising steps:

[0067] Weigh 3.64g pseudo-boehmite, 0.92g fumed silica, 2.53g template DPA·H 3 PO 4 , 0.20g SAPO-11 molecular sieve (seed crystal, seed), was added in the pulverizer and pulverized, so that the solid reactants were evenly mixed. Then the raw material was transferred to a 100ml polytetrafluoroethylene-lined stainless steel autoclave, and placed in an oven for crystallization at 200°C for 72h. The product was filtered and washed with deionized water, and then placed in an oven at 110°C for 12 hours. 1°C / min from 20°C to 550°C, keep for 5 hours, and cool naturally. The obtained sample was impregnated with ammonium hexachloroplatinate solution to load 0.3wt% Pt and then dried at 100°C for 12 hours. After drying, the powder was placed in a muffle furnace and raised to 450°C at a rate of 1°C / min for 4 hours. The catalyst prepared above was reduced at 350° C. for 2...

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Abstract

The invention provides a solid phase synthetic method of a hydroisomerization catalyst. The method comprises the following steps: 1) mixing solid phase silicon source, aluminum source and phosphorus source templates with crystal seeds for crystallization, and filtering, washing and roasting the obtained sample to remove the phosphorus source template to obtain an SAPO-11 molecular sieve; and 2) loading noble metals to the SAPO-11 molecular sieve, and drying and roasting the same and carrying out a hydroisomerization reaction to obtain the hydroisomerization catalyst. The method is simple in process, low in cost and high in efficiency, does not generate wastewater, and has good economical and social benefits, and the isomerized product is high in selectivity and yield when the catalyst is used for the hydroisomerization reaction. The hydroisomerization catalyst has a wide application prospect in inorganic chemical field.

Description

technical field [0001] The invention relates to the field of inorganic chemistry, in particular to a solid-phase synthesis method of a hydroisomerization catalyst in a solvent-free system. Background technique [0002] Lubricating oil is one of the most widely used chemical products, and its low-temperature fluidity greatly affects the performance of the oil, while the low-temperature fluidity of long-chain normal paraffins is poor and must be improved. Hydroisomerization dewaxing is to convert the long-chain n-alkanes in the oil into branched alkanes through hydroisomerization, and remove part of the wax, which not only reduces the pour point of the base oil, but also increases the viscosity index and yield. Compared with solvent refining and catalytic dewaxing processes, hydroisomerization dewaxing has better advantages, and has become a hot spot in the field of petroleum refining recently. On the other hand, the long-chain n-alkanes obtained by the Fischer-Tropsch synth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G45/64
CPCB01J29/85C10G45/64
Inventor 吴晛陈新庆刘子玉丘明煌任淑吴丹魏伟孙予罕
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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