Catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization as well as preparation method and application of catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization

A catalyst, hydrocyanic acid technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, preparation/purification/separation of hydrogen cyanide, etc., can solve the unknown effect and weight , complex catalyst combination, difficult to grasp the catalyst ratio and other problems, to achieve the effect of clean production, reduction of ammonia oxygen content, and convenient preparation

Active Publication Date: 2015-01-14
SHANDONG XINHECHENG AMINO ACID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Moreover, it can be seen from the above-mentioned composite catalyst patent documents that the combination of composite catalysts is complicated, and while obtaining multiple fun...

Method used

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  • Catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization as well as preparation method and application of catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization
  • Catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization as well as preparation method and application of catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 (catalyst 1)

[0042] Dissolve 23.5g of molybdenum chloride in 300ml of water to form a solution, add 85.0g of bismuth nitrate and 54.5g of ferric nitrate in batches, and form a mixed solution with 16.3g of ethylenediamine (total mass 10%).

[0043] Under the condition of sufficient stirring, 82 g of silica sol (50% of the total mass) was added into the mixed solution, and heat-treated at 100° C. while stirring to form a slurry. The slurry was then spray dried using a rotary disc spray dryer. The resulting fine spherical particles were calcined at 200 °C for 6 h and at 750 °C for 1 h.

[0044] The prepared catalyst obtains the following experimental formula:

[0045] Mo 1 Bi 1.5 Fe 2.6 o 36.9 (SiO 2 ) 1.35

Embodiment 2

[0046] Embodiment 2 (catalyst 2)

[0047] 24.4g of molybdenum oxide was dissolved in 300ml of water to form a solution, and 98.5g of bismuth nitrate and 91.5g of ferric chloride were added in batches to form a mixed solution with 17.15g of gluconic acid (8%).

[0048] Under the condition of full stirring, 192.96 silica sol (90%) was added into the mixed solution, and heat treated at 100°C while stirring to form a slurry. The slurry was then spray dried using a rotary disc spray dryer. The resulting fine spherical particles were calcined at 250 °C for 4 h and at 700 °C for 2 h.

[0049] The prepared catalyst obtains the following experimental formula:

[0050] Mo 1 Bi 1.2 Fe 2 o 31.8 (SiO 2 ) 3.21

Embodiment 3

[0051] Embodiment 3 (catalyst 3)

[0052] 32.5g of molybdenum nitrate was dissolved in 300ml of water to form a solution, and 79.75g of bismuth carbonate and 56.0g of calcium carbonate were added in batches to form a mixed solution with 37.2g of lactic acid (15%).

[0053] Under the condition of sufficient stirring, 148.8 g of silica sol (60%) was added into the mixed solution, and heat-treated at 100° C. while stirring to form a slurry. The slurry was then spray dried using a rotary disc spray dryer. The resulting fine spherical particles were calcined at 300 °C for 3 h and at 650 °C for 3 h. The prepared catalyst obtains the following experimental formula:

[0054] Mo 1 Bi 1.5 Ca 2.68 o 18.54 (TiO 2 ) 1.26 .

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Abstract

The invention discloses a catalyst for preparing hydrocyanic acid by adopting methanol ammonia oxidization as well as a preparation method and application of the catalyst for preparing the hydrocyanic acid by adopting the methanol ammonia oxidization. Most existing catalysts for preparing the hydrocyanic acid by adopting the methanol ammonia oxidization are complicated in structure, inconvenient to prepare and non-ideal in yield. The catalyst disclosed by the invention consists of elements such as molybdenum, bismuth and an oxide of X; the experimental form of the catalyst is MoaBibXcOd, wherein X is one of Fe, K, Ca and Zn; a, b and c are atomic ratios; when a is equal to 1, b is equal to a number from 1 to 2.5, c is equal to a number from 1 to 5, and d is a total number of oxygen atoms in a corresponding oxide generated by chemical combination of catalyst components. The catalyst disclosed by the invention is simple in constituent, high in catalysis activity and stability and convenient to prepare; when the catalyst is applied to preparation of the hydrocyanic acid by adopting the ammonia oxidization, the ammonia oxygen amount is greatly reduced.

Description

technical field [0001] The invention relates to the field of preparation of chemical raw material intermediates, in particular to a catalyst for preparing hydrocyanic acid by ammoxidation of methanol, a preparation method and application thereof. Background technique [0002] Hydrocyanic acid is an important chemical raw material intermediate, which can be used to prepare nylon, pesticides, acrylonitrile, gold, silver and copper, electroplating, organic synthesis, etc., and has a large market space. [0003] The methods for producing hydrocyanic acid mainly include methane ammoxidation method, acrylonitrile by-product method, light oil cracking method, etc. The methane ammoxidation reaction temperature is above 1000°C, and the yield of hydrocyanic acid can only reach 60-70%. The high reaction temperature brings unsafe factors. The by-production method of acrylonitrile is to synthesize acrylonitrile by catalytic oxidation of propylene, air and ammonia as raw materials, and a...

Claims

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Application Information

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IPC IPC(8): B01J23/881B01J23/31C01C3/02
Inventor 陈聪陈志荣王志轩盛壹栋张立富
Owner SHANDONG XINHECHENG AMINO ACID
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