Method for preparing D-arabinose

A technology of arabinose and syrup, which is applied in the field of preparing D-arabino sugar, which can solve the problems of titanium ion leakage, low production capacity, and low reaction selectivity, and achieve the effects of strong operability, reduced labor intensity, and simple process flow

Inactive Publication Date: 2010-09-29
YICHANG TIANCHU CHEM
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  • Abstract
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Problems solved by technology

However, this method was eliminated due to many steps, high cost, and the use of highly toxic reagents such as mercury in the process, and was replaced by microbial fermentation.
However, the research on chemical synthesis methods has not stopped. For example, a titanium-containing zeolite is used as a catalyst, and hydrogen peroxide oxidizes calcium gluconate to prepare D-Arabinose. However, due to the seri

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0022] 10gFeCl 3 and 2gCaCl 2 After crushing and mixing, slowly add 150mL of ethanol with a water content of 60~98% under vigorous stirring, after stirring for 5 minutes, add 15g of zeolite at a temperature of 5°C, and bake at a temperature of 80°C for 3 hours The resulting zeolite catalyst.

preparation Embodiment 2

[0024] 12gFeCl 3 and 3gCaCl 2 After crushing and mixing, slowly add to 160ml of 60~98% aqueous ethanol under vigorous stirring, after stirring for 15 minutes, add 18g of zeolite at 15°C, and bake at 90°C for 10 The zeolite catalyst obtained after hours.

preparation Embodiment 3

[0025] Catalyst preparation embodiment three: 13gFeCl 3 and 4gCaCl 2 After crushing and mixing, slowly add to 160ml of 60~98% aqueous ethanol under vigorous stirring, after stirring for 20 minutes, add 20g of zeolite at 37°C, and bake at 1400°C for 15 The zeolite catalyst obtained after hours.

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Abstract

The invention provides a method for preparing D-arabinose, which mainly comprises the following steps of: (1) preparing an iron-containing ion-calcium ion zeolite oxidation catalyst; (2) catalyzing hydrogen peroxide by using the prepared catalyst to oxidize gluconate so as to prepare the D-arabinose; and (3) reclaiming the catalyst, and removing the leaked iron ions and calcium ions. The method does not produce pollution on the environment, prepares product with good and stable quality, and is suitable for large-scale industrialized production.

Description

technical field [0001] The invention relates to a method for preparing D-arabinose. Background technique [0002] D-arabinose is the abbreviation of D-arabinose, its common English name is D-arabinose, and its molecular formula is C 5 h 10 o 5 , the molecular weight is 150.13. White crystal with a melting point of 156~160°C (although the crystal form may be slightly different, the specific rotation =-102~-105° (C=3, water), there is a phenomenon of mutarotation. Slightly soluble in alcohol, insoluble in ether, acetone, etc. It is easily soluble in water, tends to be supersaturated in water, and is in the form of syrup. D-R is a natural component present in all organism cells, closely related to the formation of adenosine and the regeneration of ATP, and is one of the most basic energy sources for life metabolism. D-R has been used to treat myocardial ischemia, improve the ability of the heart to tolerate ischemia, and improve the overall function of the heart. [00...

Claims

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Application Information

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IPC IPC(8): C07H3/02C07H1/00
Inventor 雍媛媛
Owner YICHANG TIANCHU CHEM
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