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Process for manufacturing acrolein or acrylic acid from glycerin

一种丙烯醛、丙烯酸的技术，应用在碳基化合物制备、化学仪器和方法、有机化合物的制备等方向，能够解决没有催化剂等问题

Inactive Publication Date: 2011-05-18
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] However, there are no catalysts that can be used on an industrial scale with higher performance

Method used

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  • Process for manufacturing acrolein or acrylic acid from glycerin
  • Process for manufacturing acrolein or acrylic acid from glycerin
  • Process for manufacturing acrolein or acrylic acid from glycerin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Cesium salt of tungstophosphoric acid (CsPW) was prepared according to JP-A1-4-139149. That is, 50 g tungstophosphoric acid (H 3 [PW 12 o 40 ] nH 2 (2, n=about 30, product of Nippon Inorganic Color & Chemical Co., Ltd) was dissolved in 20 ml of pure water to obtain an aqueous solution of tungstophosphoric acid. In a separate beaker, 7.19 g cesium nitrate (CsNO 3 , Kishida Chemical Co., Ltd) was dissolved in 60 ml of water to obtain an aqueous solution of cesium nitrate. Under stirring, the aqueous solution of cesium nitrate was added dropwise into the aqueous solution of tungstophosphoric acid through the dropping funnel. Each drop produces a white slurry.

[0104] The resulting slurry was processed in a rotary evaporator under vacuum at 60 °C to obtain a white powder. The powder was then dried in an oven at 150°C for 6 hours at ambient pressure. Then, the resulting powder was calcined in air at 250° C. for 3 hours using a muffle furnace to obtain a cesium salt ...

Embodiment 2

[0113] Repeat the method of embodiment 1, except using 5.44 g rubidium nitrate (RbNO 3 ) (Mitsuwa Chemicals Co., Ltd) instead of cesium nitrate (CsNO 3 ) to prepare a rubidium salt catalyst (RbPW) of tungstophosphoric acid having the following composition: H 0.5 Rb 2.5 PW 12 o 40 .

[0114] Reaction and evaluation were performed under the same conditions as in Example 1.

Embodiment 3

[0116] The method of Example 1 was repeated except that 3.22 g of calcium chloride dihydrate (CaCl 2 2H 2 O) (Wako Pure Chemical Industries, Ltd) instead of cesium nitrate (CsNO 3 ) to prepare a calcium salt catalyst (CaPW) of tungstophosphoric acid having the following composition: Ca 1.5 PW 12 o 40 .

[0117] Reaction and evaluation were performed under the same conditions as in Example 1.

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Abstract

The subject of the present invention is a process for preparing acrolein by dehydration of glycerin, characterized in that the dehydration is carried out in the presence of a catalyst comprising mainly a compound in which protons in a heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements. The process according to the invention permits to obtain acrolein at higher yield.

Description

technical field [0001] The present invention relates to a process for the production of acrolein and / or acrylic acid from glycerol, and more particularly to a process for the production of acrolein by dehydration of glycerol in the presence of novel catalysts based on heteropolyacid salts. Background technique [0002] For the chemical industry, fossil resources, such as crude oil fractions, will be depleted within a few decades. Resources of natural and renewable origin are therefore being increasingly investigated as alternative raw materials. [0003] Acrolein, an important synthetic intermediate for the chemical industry, is prepared industrially by the oxidation of propylene in the gas phase via oxygen in the air in the presence of mixed oxide-based catalyst systems. Glycerol derived from animal or vegetable oils is one of the expected pathways as a substitute for propylene in the production of biodiesel or oleochemicals, and glycerol is capable of producing acrolein w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/52C07C47/22
CPCC07C45/52B01J27/188C07C47/22
Inventor J-L.迪布瓦Y.马加塔尼K.奥库姆拉
Owner ARKEMA FRANCE SA
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