Effect of Extended Aging and Oxidation on Linear Poly(propylenimine)-Mesoporous Silica Composites for CO2 Capture from Simulated Air and Flue Gas Streams

Functionalized hypercrosslinked polymers (HCPs) with surface areas between 213 and 1124 m2/g based on a range of monomers containing different chemical moieties were evaluated for CO2 capture using a pressure swing adsorption (PSA) methodology under humid conditions and elevated temperatures. The networks demonstrated rapid CO2 uptake reaching maximum uptakes in under 60 s. The most promising networks demonstrating the best selectivity and highest uptakes were applied to a pressure swing setup using simulated flue gas streams. The carbazole, triphenylmethanol and triphenylamine networks were found to be capable of converting a dilute CO2 stream (>20%) into a concentrated stream (>85%) after only two pressure swing cycles from 20 bar (adsorption) to 1 bar (desorption). This work demonstrates the ease with which readily synthesized functional porous materials can be successfully applied to a pressure swing methodology and used to separate CO2 from N2 from industrially applicable simulated gas streams under more realistic conditions.

Download Full-text

Mechanism of formation of heat stable salts (HSSs) and their roles in further degradation of monoethanolamine during CO2 capture from flue gas streams

Energy Procedia ◽

10.1016/j.egypro.2011.01.093 ◽

2011 ◽

Vol 4 ◽

pp. 591-598 ◽

Cited By ~ 41

Author(s):

Teeradet Supap ◽

Raphael Idem ◽

Paitoon Tontiwachwuthikul

Keyword(s):

Co2 Capture ◽

Flue Gas ◽

Mechanism Of Formation ◽

Gas Streams ◽

Heat Stable

Download Full-text

Physical and transport properties of aqueous amino alcohol solutions for CO2 capture from flue gas streams

Process Safety and Environmental Protection ◽

10.1016/j.psep.2008.03.006 ◽

2008 ◽

Vol 86 (4) ◽

pp. 291-295 ◽

Cited By ~ 14

Author(s):

Kreangkrai Maneeintr ◽

Amr Henni ◽

Raphael O. Idem ◽

Paitoon Tontiwachwuthikul ◽

Andrew G.H. Wee

Keyword(s):

Transport Properties ◽

Co2 Capture ◽

Flue Gas ◽

Amino Alcohol ◽

Gas Streams

Download Full-text

Guanidinylated poly(allylamine) supported on mesoporous silica for CO2 capture from flue gas

Fuel ◽

10.1016/j.fuel.2013.12.018 ◽

2014 ◽

Vol 121 ◽

pp. 79-85 ◽

Cited By ~ 40

Author(s):

Mustafa A. Alkhabbaz ◽

Ratayakorn Khunsupat ◽

Christopher W. Jones

Keyword(s):

Mesoporous Silica ◽

Co2 Capture ◽

Flue Gas

Download Full-text

Study of CO2 Capture Using Triethanolamine-Modified Mesoporous Silica

Materials Science Forum ◽

10.4028/www.scientific.net/msf.688.286 ◽

2011 ◽

Vol 688 ◽

pp. 286-290

Author(s):

Hong Li Zhang

Keyword(s):

Carbon Dioxide ◽

Mesoporous Silica ◽

Flue Gas ◽

Room Temperature ◽

Solid Sorbents ◽

Gas Streams ◽

Silica Material ◽

Adsorption Capacities ◽

Adsorption Desorption ◽

Uniform Pore Size

Novel functionalised absorbents have been synthesized by immobilization of triethanolamine on synthetic mesoporous silica for CO2capture. Mesoporous silica material with a uniform pore size of 20-50nm and a surface area of 200~300 m2/g was used as loader for capturing agents. The capture of carbon dioxide from simulated flue gas streams has been achieved by using triethanolamine immobilized mesoporous silica. Preliminary attempts have also been made to determine the CO2adsorption capacities of these newly developed materials. The results revealed that maximum adsorption capacities was 28.01mg/g for immobilized triethanolamine mesoporous silica at room temperature,and the rate of desorption is 99% at 90°C.Recycle of adsorption-desorption have many times,and the ability of capturing CO2was stable. The results suggest that immobilized triethanolamine have a good affinity for the capture of carbon dioxide from simulated flue gas streams.The performance of these immobilized and triethanolamine-mesoporous silica solid sorbents decreased with regeneration.

Download Full-text