Transition metal phosphide hydrofined catalyst and preparation method thereof

A transition metal, hydrorefining technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low phosphide dispersion, reduced catalyst activity, and unsatisfactory conditions. Achieve high hydrofining reactivity, small interaction, and improve performance

Inactive Publication Date: 2011-03-30
常州介孔催化材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The supported phosphide catalyst has the advantages of high metal utilization rate and easy adjustment of pore structure, but its disadvantage is that the force between the active component and the support is strong, making it difficult to form phosphide or the phosphide is not in an ideal catalytic state , the dispersity of the generated phosphide is not high, which reduces the activity of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 1.63g of nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) and 0.73 g of diammonium hydrogen phosphate ((NH 4 ) 2 HPO 4 ) were dissolved in deionized water respectively, then the two were mixed, adjusted with concentrated nitric acid to dissolve the precipitate, and an equal volume was impregnated into 3.0 g of mesoporous carbon (the pore volume of mesoporous carbon was 2.0 mL / g, and the specific surface area was 1500 m 2 / g, pore diameter is 5nm). Immerse for 10 hours, then dry at 120°C and bake at 200°C for 3 hours. 0.11g TiCl 4 The aqueous solution of the above sample was added dropwise, immersed for 10 hours, then dried at 120°C for 10 hours, and calcined at 200°C for 3 hours to obtain a catalyst precursor.

[0024] 1g of the catalyst precursor was placed in the constant temperature zone of the reactor, and both ends were supported by quartz sand. Reduction with hydrogen at 150°C for 2 hours, then heated to 500°C at a rate of 2°C / min, constant temperature for 3 hou...

Embodiment 2

[0026] With 0.43g of Ce(NO 3 ) 4 Instead of 0.11g TiCl in Example 1 4 , the composition is shown in Table 1, and other steps are the same as in Example 1.

Embodiment 3

[0028] Replace nickel nitrate of 1.63g and the diammonium hydrogen phosphate of 0.73g in embodiment 1 with the cobalt nitrate of 2.61g and the diammonium hydrogen phosphate of 1.18g, with 0.85g TiCl 4 Instead of 0.11g TiCl in Example 1 4 , the composition is shown in Table 1, and other steps are the same as in Example 1.

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PUM

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Abstract

The invention relates to a transition metal phosphide hydrofined catalyst and a preparation method thereof. In the transition metal phosphide hydrofined catalyst, mesoporous carbon is used as a carrier, the phosphide of a first transition metal is used as an active component, and a second transition metal element is used as an aid. The phosphide of the first transition metal is one or more phosphides of Fe, Co, Ni, W, Mo, Ru, Pd and Pt, and the second transition metal element is one or more metals or metallic oxides of Ti, Ce, La, Y, Zn and Nb. The phosphide of the first transition metal is loaded by a method for dipping in required transition metal phosphate solution; after drying and roasting, the second transition metal element is loaded by a dipping method; and the final catalyst is obtained after drying, sintering and reducing. The transition metal phosphide hydrofined catalyst has high activities of hydrodesulphurization and hydrodedenitrification and is particularly suitable for a deep desulphurization reaction process of macromolecular sulfocompounds difficult to remove in distillate oil.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, in particular to a hydrorefining catalyst containing transition metal phosphides and a preparation method thereof. Background technique [0002] In recent years, the trend of heavy and inferior oil has become increasingly serious, and environmental protection regulations have become increasingly stringent, making the development direction of diesel hydrofining technology as follows: the processed raw materials are developed towards high sulfur, and the products produced are towards ultra-low sulfur clean Fuel direction development. Starting from 2009 in EU countries, all motor vehicles must fully use sulfur-free fuels with a sulfur content of less than 10 μg / g (Euro V standard). China's vehicle fuel standards are also constantly improving. Beijing and other places have begun to implement emission standards equivalent to Euro IV (sulfur content less than 50 μg / g) in 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/14B01J27/185B01J27/19B01J27/188C10G45/04
Inventor 鲁墨弘李明时沈俭一
Owner 常州介孔催化材料有限公司
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