Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Chemical kinetics testing method by adopting dynamic admittance spectroscopy instrument

A technology of chemical kinetics and dynamic admittance, applied in the direction of material capacitance, etc., can solve the problems of high frequency switching rate, inability to adapt to fast dynamic testing, slow data acquisition rate, etc.

Inactive Publication Date: 2012-09-12
NANJING UNIV OF POSTS & TELECOMM
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] From an instrument point of view, the existing impedance spectrometer is not designed for dynamic testing and cannot meet the needs of fast dynamic testing
The disadvantages mainly include: 1) the data acquisition rate is relatively slow, and the measurement frequency is usually tens of MHz; 2) more importantly, the frequency switching rate of the existing impedance spectrometer is slow, and during dynamic testing, it is required to operate within a very short Frequency switching within a short time requires a very high frequency switching rate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chemical kinetics testing method by adopting dynamic admittance spectroscopy instrument
  • Chemical kinetics testing method by adopting dynamic admittance spectroscopy instrument
  • Chemical kinetics testing method by adopting dynamic admittance spectroscopy instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention comprehensively considers the reaction rate, the frequency of the excitation signal, the frequency sweep switching time, the data acquisition rate, and the synchronization of two-way data acquisition, and invents a molecular dynamic admittance spectrometer with real-time dynamic testing function; and aims at different organic reactions , according to the idea of ​​"micro-element method", the developed admittance spectrometer is used to test the dynamic reaction of organic molecules, so as to obtain the kinetic equation with practical value.

[0023] 1) Kinetic test method

[0024] The reactants and products are made into a series of standard solutions according to the reaction progress, and the capacitance value C of the standard solution is measured by using the admittance spectrum method (considering that most of the organic matter is a dielectric, its electrical properties can be represented by the capacitance value C), so as to obtain the concen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a chemical kinetics testing method by adopting a dynamic admittance spectroscopy instrument, wherein the dynamic admittance spectroscopy instrument includes the following parts: a signal generator (1), a chemical reactor and signal generator interface (2), a data acquisition circuit and measurement circuit (3), an acquisition-measurement circuit and computer interface (4), a data processing and display device (5). The signal generator (1) generates excitation signals in real time, and the excitation signals enter a chemical reactor (6) through the chemical reactor and signal generator interface (2); the data acquisition circuit and measurement circuit (3) performs real-time measurement and acquisition on signals outputted in two channels and the acquisition-measurement circuit and computer interface (4) transmits the processing result into a computer; and finally the data processing and display device (5) performs data processing and display. Due to very small amplitude of the excitation signals, voltage output needs to be amplified for performing data acquisition and processing in order to detect the weak signals, and the processing result is transmitted to the computer through a communication interface for subsequent processing, and the measurement result is displayed and stored at last.

Description

technical field [0001] The invention belongs to the field of macroscopic chemical dynamics instruments. Through real-time measurement of the change of conductance and capacitance during the reaction process of the chemical reaction system, the function curve of the concentration of the substance in the reaction system with the reaction time is obtained, and then the chemical kinetic equation is obtained. Background technique [0002] Chemical kinetics is one of the most important research contents in the field of chemistry. Through research methods such as molecular beams and lasers, chemical kinetics has advanced to the level of elementary reactions, and the transition states and resonance states of specific reactions can be studied. However, for actual chemical production or experimental research, the microscopic state is usually not considered, but the specific kinetic equation needs to be obtained, so the macroscopic dynamics is more practical. Specific to organic chem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
Inventor 唐超刘瑞兰戎舟徐慧黄维
Owner NANJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products