Enhancing the intermediate-temperature CO2 capture efficiency of mineral MgO via molten alkali nitrates and CaCO3: Characterization and sorption mechanism

2021 ◽  
Vol 50 ◽  
pp. 101605
Author(s):  
Theodoros Papalas ◽  
Iakovos Polychronidis ◽  
Andy N. Antzaras ◽  
Angeliki A. Lemonidou
Keyword(s):  
Co2 Capture ◽  
Capture Efficiency ◽  
Intermediate Temperature ◽  
Sorption Mechanism

CO2 capture efficiency and heat duty of solid acid catalyst-aided CO2 desorption using blends of primary-tertiary amines

2018 ◽  
Vol 69 ◽  
pp. 52-59 ◽  
Author(s):  
Wayuta Srisang ◽  
Fatemeh Pouryousefi ◽  
Priscilla Anima Osei ◽  
Benjamin Decardi-Nelson ◽  
Ananda Akachuku ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Capture Efficiency ◽  
Tertiary Amines ◽  
Co2 Desorption

Enhancing the CO2 capture efficiency of amines by microgel particles

2020 ◽  
Vol 103 ◽  
pp. 103172
Author(s):  
Yang Yang ◽  
Xingguang Xu ◽  
Yunfei Guo ◽  
Colin D. Wood
Keyword(s):  
Co2 Capture ◽  
Capture Efficiency ◽  
Microgel Particles

Alkali Nitrates Molten Salt Modified Commercial MgO for Intermediate-Temperature CO2 Capture: Optimization of the Li/Na/K Ratio

2017 ◽  
Vol 56 (6) ◽  
pp. 1509-1517 ◽  
Author(s):  
Yaqian Qiao ◽  
Junya Wang ◽  
Yu Zhang ◽  
Wanlin Gao ◽  
Takuya Harada ◽  
...  
Keyword(s):  
Molten Salt ◽  
Co2 Capture ◽  
Intermediate Temperature

scholarly journals Synthesis and Formation Mechanism of Limestone-Derived Porous Rod Hierarchical Ca-based Metal–Organic Framework for Efficient CO2 Capture

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4297
Author(s):  
Po-Hsueh Chang ◽  
Hua-Pei Hsu ◽  
Szu-Chen Wu ◽  
Cheng-Hsiung Peng
Keyword(s):  
Co2 Capture ◽  
Metal Organic Framework ◽  
Hydrothermal Process ◽  
Intermediate Temperature ◽  
Oriented Attachment ◽  
Structural Formation ◽  
Metal Organic ◽  
Co2 Capture Capacity ◽  
Capture Capacity ◽  
Organic Framework

Limestone is a relatively abundant and low-cost material used for producing calcium oxide as a CO2 adsorbent. However, the CO2 capture capacity of limestone decreases rapidly after multiple carbonation/calcination cycles. To improve the CO2 capture performance, we developed a process using limestone to transform the material into a rod Ca-based metal–organic framework (Ca-MOF) via a hydrothermal process with the assistance of acetic acid and terephthalic acid (H2BDC). The structural formation of rod Ca-MOF may result from the (200) face-oriented attachment growth of Ca-MOF sheets. Upon heat treatment, a highly stable porous rod network with a calcined Ca-MOF-O structure was generated with a pore distribution of 50–100 nm, which allowed the rapid diffusion of CO2 into the interior of the sorbent and enhanced the CO2 capture capacity with high multiple carbonation–calcination cycle stability compared to limestone alone at the intermediate temperature of 450 °C. The CO2 capture capacity of the calcined porous Ca-MOF-O network reached 52 wt% with a CO2 capture stability of 80% after 10 cycles. The above results demonstrated that rod Ca-MOF can be synthesized from a limestone precursor to form a porous network structure as a CO2 capture sorbent to improve CO2 capture performance at an intermediate temperature, thus suggesting its potential in environmental applications.

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