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Load type calcium oxide catalyst, its preparation method and uses

A catalyst and calcium oxide technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of complex hydrotalcite structure, difficult preparation, poor repeatability, etc. problems, to achieve good reactivity, good repeatability, and easy separation

Active Publication Date: 2006-09-27
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that this type of catalyst has good catalytic activity, but hydrotalcite has a complex structure, is difficult to prepare, and has poor repeatability. 2 Sensitive to moisture and easily poisoned

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 40g of MgO and calcinate at 400°C for 5hr. Prepare 22.6 (wt)% calcium acetate solution, impregnate it with equal volume, the number of impregnation is 1 time, dry at 80°C for 10hr, and then calcinate at 700°C for 10hr to obtain the catalyst matrix containing Ca, take 1g of this catalyst matrix at 700°C °C, treated in a nitrogen atmosphere for 2 hours to obtain a supported calcium oxide catalyst. (This catalyst was named Y1).

Embodiment 2-9

[0032] The preparation process is the same as in Example 1, and the parameters are shown in Table 1.

[0033] Reality

Embodiment 10

[0035] Add 50 g of reaction raw material oil, 41.5 g of methanol, and 1 g of the catalyst Y1 prepared in Example 1 into a reactor with a condensing device. The reaction temperature is 65° C., and the reaction is carried out for 5 hours under vigorous stirring, and the catalyst is removed by filtration. The filtrate was allowed to stand for 2hr and was divided into two layers. The upper layer is a fatty acid methyl ester layer, and the lower layer is a light yellow transparent glycerin layer. The raw material conversion rate was 92.3%. No Ca component was detected in the filtrate, and it can be considered that no catalyst component was eluted.

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PUM

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Abstract

The present invention provides one kind of supported calcium oxide catalyst and its preparation process and usage in preparing biological diesel oil. The supported calcium oxide catalyst has the co-catalyst of strontium oxide, zinc oxide or lanthanum oxide, carrier of magnesia, silica, alumina or magnesia-alumina, calcium oxide supporting amount of 2-30 wt% of the carrier and co-catalyst supporting amount of 0-16 wt% of the carrier. The supported calcium oxide catalyst has simple preparation process, high repeatability, high reaction activity for preparing biological diesel oil, insolubility in methanol system and easy separation from the reaction system.

Description

technical field [0001] The invention relates to a supported calcium oxide solid base catalyst for producing biodiesel. Background technique [0002] Biodiesel is a long-chain fatty acid methyl ester obtained by the transesterification reaction of natural oil and methanol (or ethanol), and its combustion performance is equivalent to that of petroleum diesel. Biodiesel has a high cetane number and does not contain sulfur dioxide in the exhaust gas after combustion. Compared with petroleum diesel, the emission of particulate matter is reduced by 10.1%, hydrocarbons are reduced by 21.1%, and CO is reduced by 11.0%. It is an environmentally friendly vehicle fuel. [0003] At present, the production method of industrial biodiesel is mainly liquid-phase catalytic method. The raw material animal and vegetable oils are first strictly refined, and then mixed with some short-chain alcohols (methanol, ethanol, etc.) in liquid strong alkali (such as KOH, NaOH, NaOCH 3 etc.) or liquid st...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J23/10C07C67/00
CPCY02E50/13Y02E50/10
Inventor 颜姝丽梁斌杜泽学胡见波王广欣闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
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