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A method for studying the kinetics of sucrose hydrolysis reaction process

A hydrolysis reaction and kinetic technology, applied in the field of reaction kinetics research, can solve the problems of large error, complicated operation, discontinuous measurement and so on

Active Publication Date: 2022-04-15
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These traditional methods are relatively widely used, but the operation is cumbersome, the error is large, the measurement is discontinuous, and it is difficult to realize the online rapid analysis of multi-component content

Method used

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  • A method for studying the kinetics of sucrose hydrolysis reaction process
  • A method for studying the kinetics of sucrose hydrolysis reaction process
  • A method for studying the kinetics of sucrose hydrolysis reaction process

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Embodiment Construction

[0029] The technical scheme of the present invention is described in further detail below in conjunction with specific embodiments:

[0030] The specific implementation process is as follows:

[0031] 1. Modeling sample preparation and Raman spectrum acquisition

[0032] According to the stoichiometric relationship in the sucrose hydrolysis reaction, the ratio of the change in the amount of the substance is 1:1:1, the concentration of sucrose is from 1mol / L to 0mol / L, and the concentration of fructose and glucose is from 0mol / L to 1mol / L respectively , prepare 21 parts of sucrose, fructose, glucose mixed solution C with different concentration gradients every 0.05mol / L x1 -C x21 , the sample C x1 -C x21 Place them in measuring bottles respectively, collect the Raman data xi of each solution, and collect 3 times for each solution. In addition, the Raman spectral data b of the sucrose standard substance B is collected;

[0033] Raman spectrum acquisition parameters: spectr...

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Abstract

The invention discloses a method for studying the kinetics of the sucrose hydrolysis reaction process. The method adopts Raman spectroscopy combined with an angle conversion method to quickly track the component content in the sucrose hydrolysis process. Including: by collecting the Raman spectrum of the mixed solution under different concentration ratios of sucrose, fructose, and glucose, after calculating the second order derivative of the spectrum, smoothing and reducing noise, and using the angle conversion algorithm to establish a sucrose content analysis model in the sucrose hydrolysis system; Calculation of reaction rate constant; calculation of reaction activation energy Ea. The invention does not need to perform pretreatment on samples, and can realize on-line tracking of component content and research on reaction kinetics in the sucrose hydrolysis process.

Description

technical field [0001] The invention belongs to the field of reaction kinetics research, and relates to a kinetic research method of sucrose hydrolysis reaction process. Background technique [0002] In the traditional qualitative and quantitative analysis of multi-component content, most of them measure some physical quantities offline to realize the determination of component concentration. For example, the hydrolysis of sucrose is a typical chemical kinetic experiment, and it is also a physicochemical experiment adopted by colleges and universities. At present, the polarimetry is mostly used to measure the hydrolysis of sucrose at home and abroad, and the reaction process is measured by a polarimeter, but the polarimetric method is only suitable for solutions with optical activity, and data points will be lost when measured at time intervals, and it is easy to produce large parallax. In addition, chromatographic methods can also be used for sugar content analysis, includ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65G01N21/21
CPCG01N21/65G01N21/21G01N2201/122
Inventor 粟晖马金鸽刘柳黄火兰姚志湘
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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