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A kind of preparation method of low carbon alkane isomerization catalyst

A low-carbon alkane and catalyst technology, which is applied in the field of preparation of low-carbon alkane isomerization catalysts, can solve the problems of reducing the effective utilization rate of molecular sieves, affecting the selectivity and stability of the catalyst, and deteriorating the activity and diffusion performance, and achieves a guaranteed Addition/dehydrogenation rate, increase activity and selectivity, increase the effect of diffusion rate

Active Publication Date: 2017-11-24
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEMICALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the catalyst prepared by this method, the effective utilization rate of the molecular sieve is reduced, the activity and diffusion performance are deteriorated, and the selectivity and stability of the catalyst are affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Dissolve chloroplatinic acid containing 0.3 g of platinum in 6 g of water, fully mix 10 g of 200-mesh cellulose with the above solution, and dry the mixture at 80°C for 6 hours to obtain platinum-loaded cellulose.

[0025] (2) 45 grams of ZSM-35 molecular sieve (0.5 microns in particle size, SiO 2 / Al2 o 3 The molar ratio is 25), 72 grams (dry basis 76%) aluminum hydroxide is SB powder, the cellulose that loads platinum prepared in step (1), 50ml concentration is that the nitric acid solution of 0.2M and 30ml water are fully kneaded, make it become The paste-like plastic material is shaped into a cylindrical strip with a diameter of 1.5 mm on an extruder, and the cylindrical strip is dried at 110° C. for 8 hours, and then calcined at 650° C. for 4 hours in an air atmosphere to obtain a catalyst. The catalyst is composed of Pt: 0.3%, ZSM-35: 45%, pore-forming agent: 10%, alumina: the balance. The pore volume of the catalyst with a pore diameter of 1-10nm accounts f...

Embodiment 2

[0028] With embodiment 1, difference is that substance content is adjusted in each step, ZSM-38 molecular sieve (particle diameter is 0.7 micron, SiO 2 / Al 2 o 3 The molar ratio is 25) to replace the ZSM-35 molecular sieve, and the catalyst composition is obtained as Pt: 0.02%, ZSM-38: 30%, pore-forming agent: 10%, and alumina: the balance. See Table 2 for the evaluation results.

Embodiment 3

[0030] Same as Example 1, the difference is that the substance content in each step is adjusted, and the obtained catalyst composition is Pt: 0.02%, ZSM-35: 35%, pore-forming agent: 10%, and alumina: the balance. The evaluation results are shown in Table 1.

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PUM

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Abstract

The invention discloses a preparation method of a low-carbon alkane isomerization catalyst, which includes the following contents: (1) loading active components on a macroporous pore-forming agent, and then drying to obtain a modified pore-forming agent; (2) The catalyst product is obtained by kneading and kneading FER-type small-grain molecular sieves, precursors of refractory oxides, modified pore-forming agents, peptizers and water, and drying and roasting. The preparation process of this method is simple, with low cost, and the catalyst product is used for C 5 ~C 10 During the isomerization reaction of alkanes, it has the characteristics of high catalytic activity and high selectivity of isomeric olefins.

Description

technical field [0001] The invention relates to a preparation method of a low-carbon alkane isomerization catalyst. The catalyst is suitable for the isomerization reaction of small molecular weight n-alkanes, and can be used to produce high-octane gasoline blending components. Background technique [0002] Under certain conditions, n-alkanes are non-ideal components in petroleum products, and the isomerization reaction of n-alkanes is an important reaction in petroleum processing. Especially in catalytic gasoline blended with refinery residue, the content of sulfur and olefins is relatively high. Hydrodesulfurization and olefin reduction of gasoline can reduce the sulfur content to less than 10µg / g and the olefin content to less than 10v%, but at the same time significantly reduce the octane number. To reduce sulfur and olefins with little or no loss of octane, selective hydrocracking or isomerization is required. The RON of isoparaffins is much higher than that of normal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/67C10G45/64
Inventor 王俊英刘淑鹤刘春阳郭宏山
Owner SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEMICALS CO LTD
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