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Load hydrogenation catalyst for trickle bed and preparation method thereof

A hydrogenation catalyst and supported technology, which is applied in the direction of amino compound preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of high reaction temperature and pressure, inability to expand production on a large scale Low catalyst efficiency and other problems, to achieve the effect of low hydrogenation temperature, excellent effect and long catalyst life

Active Publication Date: 2011-10-05
SHANGHAI TAIHE INT TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above-mentioned existing processes, the batch process has limited production capacity and cannot expand production on a large scale; while the fixed-bed continuous process has disadvantages such as high reaction temperature and pressure, low catalyst efficiency, and short service life.

Method used

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  • Load hydrogenation catalyst for trickle bed and preparation method thereof
  • Load hydrogenation catalyst for trickle bed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A preparation method for a loaded hydrogenation catalyst for a trickle bed, the method comprising the following steps:

[0043] (1) Material preparation:

[0044] Prepare diatomaceous earth, nickel nitrate, cobalt nitrate, chromium nitrate, copper nitrate, magnesium nitrate, make to satisfy following proportioning (wt%):

[0045] Diatomaceous earth 50;

[0046] Nickel 45;

[0047] cobalt 3;

[0048] Chromium 1.5;

[0049] Copper 0.3;

[0050] Magnesium 0.2;

[0051] (2) Dissolve the nitrates of the above metals in a large amount of deionized water, add the carrier, stir for about 1 hour, then add the deionized aqueous solution of sodium carbonate, and raise the temperature of the cloudy solution that forms the precipitate to 80 ° C, filter after 1 hour of heat preservation, and filter the cake Wash with deionized water;

[0052] (3) The filter cake is dried in an oven not exceeding 100°C until it reaches a constant weight, and the dried powder is placed in a muff...

Embodiment 2

[0056] A preparation method for a loaded hydrogenation catalyst for a trickle bed, the method comprising the following steps:

[0057] (1) Material preparation:

[0058] Prepare diatomaceous earth, nickel nitrate, cobalt nitrate, chromium nitrate, copper nitrate, magnesium nitrate, make to satisfy following proportioning (wt%):

[0059] Diatomaceous earth 59;

[0060] Nickel 38;

[0061] Cobalt 1.5;

[0062] Chromium 0.7;

[0063] Copper 0.3;

[0064] Magnesium 0.5;

[0065] (2) Dissolve the nitrates of the above metals in a large amount of deionized water, add the carrier, stir for about 1 hour, add the deionized aqueous solution of sodium bicarbonate, and heat up the turbid solution that forms the precipitate to 80 ° C, filter after 1 hour of heat preservation, and filter The cake was washed with deionized water;

[0066] (3) The filter cake is dried in an oven not exceeding 100°C until it reaches a constant weight, and the dried powder is placed in a muffle furnace a...

Embodiment 3

[0070] A preparation method for a loaded hydrogenation catalyst for a trickle bed, the method comprising the following steps:

[0071] (1) Material preparation:

[0072] Prepare diatomaceous earth, nickel nitrate, cobalt nitrate, chromium nitrate, barium nitrate, cerium nitrate, make to satisfy following proportioning (wt%):

[0073] Diatomaceous earth 80;

[0074] Nickel 18;

[0075] cobalt 1;

[0076] Chromium 0.2;

[0077] Barium 0.3;

[0078] Cerium 0.5;

[0079] (2) Dissolve the nitrates of the above metals in a large amount of deionized water, add the carrier, stir for about 1 hour, then add the deionized aqueous solution of ammonium carbonate, and raise the temperature of the cloudy solution that forms the precipitate to 80 ° C, filter after holding for 1 hour, and filter the cake Wash with deionized water;

[0080] (3) The filter cake is dried in an oven not exceeding 100°C until it reaches a constant weight, and the dried powder is placed in a muffle furnace an...

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Abstract

The invention relates to a load type hydrogenation catalyst for a trickle bed and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 40 to 80 percent of carrier, 18 to 50 percent of nickel, 1 to 5 percent of cobalt, and 0.1 to 2 percent of other metal elements. Compared with the prior art, the catalyst has the advantages of high efficiency and activity, good effect for continuous preparation of m-phenyldimethylamine, low hydrogenation temperature and pressure, long service life, reduced cost, and the like; and simultaneously, the preparationmethod has reasonable process and convenient operation.

Description

technical field [0001] The invention relates to a catalyst, in particular to a supported hydrogenation catalyst used in a trickle bed and a preparation method thereof. Background technique [0002] Meta-xylylenediamine, English name meta-phenyldimethylamine or meta-Xylylenediamine, molecular formula C 8 h 12 N 2 , molecular weight 136.1, CA registration number 1477-55-0, structural formula as follows: [0003] [0004] m-xylylenediamine is a colorless liquid with an almond smell, yellow when exposed to air for a long time, soluble in water and organic solvents, boiling point 248 degrees Celsius, specific gravity (d 20 )1.052, refractive index (nD 20 ) 1.5670, the viscosity is similar to dibutyl phthalate, it is a colorless transparent liquid, mainly used in the manufacture of heat-resistant, non-toxic, underwater construction, high-performance epoxy resin curing agent for rapid curing by heating, it is polyurethane resin, synthetic The raw material of functional epox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/86C07C211/27C07C209/48
Inventor 吴荣梁朱志荣田晓宏
Owner SHANGHAI TAIHE INT TRADE CO LTD