Application of lithium silicate in environment

2022-11-28

With the improvement of people's living standard,energy consumption is gradually increasing,resulting in a huge increase in CO2 emissions,this will inevitably lead to the "greenhouse effect" of global warming.In addition to controlling CO2 emissions,to take certain measures to control and recover CO2 emissions,effective control and recovery of CO2 emissions is the key to avoid this phenomenon.And lithium silicate is also an effective material for CO2 adsorption,let me introduce you in detail.

Lithium silicate can be used as CO2 adsorption material.

It is widely believed that the capture and separation of CO2 using techniques such as absorption, adsorption, and membrane separation,and then sequestration of CO2 in the salt layers of rock or the seabed is an effective way to reduce atmospheric CO2 concentrations.At the same time, it would provide the farm with absorbed CO2,which can be used to grow plants and increase crop yields.Because so much CO2 is released into the atmosphere as flue gas,and flue gas temperature above 350 ℃, so the heat recovery is the most effective measures to reduce emissions of CO2 and is also a kind of effective means to reduce costs.

The commonly used CO2 adsorption materials are lithium - based absorbent and calcium - based absorbent.Lithium ion adsorbent, Li2ZrO3 and Li_iO4 is the two most studied.Li2ZrO3 is the earliest and most studied material, but its synthesis temperature is high and its adsorption rate of CO2 is slow, so a lot of research has been carried out on it.

Strong adaptability.It can adsorb CO2 not only at high temperature, but also at low temperature and low concentration(At room temperature or 25℃ with CO2 concentration of only 2%, the adsorption capacity can exceed 25%).Therefore, it is considered as a new material that can absorb CO2 at high temperatures.By doping modification can further improve Li_iO4 performance.At present, Na+, K+, Ca2+, etc., are commonly used doping ions, which will form defects in the material structure.It is beneficial to improve its activity, make the CO2 absorption reaction more likely to occur, so as to further increase the CO2 absorption.