Booth Id:
CHEM025
Category:
Chemistry
Year:
2022
Finalist Names:
Lu, Guoxiang (School: Chongqing No 1 International Studies School)
Abstract:
Purpose of my research
(1) Use a new additive to form semi-clathrate hydrate at lower pressures and higher temperatures for CO2 capture. (Research question)
(2) Can Tetra-n-butyl Ammonium Bromide (TBAB) work?
(3) Understand the mechanism of CO2 capture by TBAB semi-clathrate from different aspects (microscopic morphology, Raman spectroscopy, etc.)
(4) Find out if TBAB semi-clathrate can capture CO2 efficiently
Experimental procedure
High-pressure DSC
Measure the temperature and pressure data for CO2 hydrate formation. Find out the
thermodynamic conditions for TBAB + CO2semi-clathrate hydrate formation.
Microscopic experiment
Explore the morphology of TBAB + CO2 semiclathrate by recording the microscopic images. Obtain the microscopic images of TBAB+CO2semi-clathrate hydrate. Understand the hydrate growth behavior.
Raman experiment
Measure Raman spectral intensity and determine the structure transition of TBAB + CO2 semi-clathrate hydrate. Disclose the mechanism of CO2 capture on the molecular scale.
Conclusions
It is found that TBAB is an effective additive which can form semi-clathrate hydrate for CO2 capture at lower pressures and higher temperatures.
The microscopic observation and Raman spectroscopy experiments indicate that 2.57 mol% TBAB is the optimal concentration for CO2 capture.
The fastest rate of TBAB+CO2 hydrate is obtained at 2.57 mol% TBAB, and the largest amount of CO2 is captured at this TBAB concentration
Awards Won:
YM American Academy: Third Award of $500.00