scholarly journals Polyethyleneimine-Modified Amorphous Silica for the Selective Adsorption of CO2/N2 at High Temperatures

ACS Omega ◽  
2021 ◽  
Author(s):  
Cheng Li ◽  
Xiaoqing Wang ◽  
Anjie Yang ◽  
Peng Chen ◽  
Tianxiang Zhao ◽  
...  
Keyword(s):  
High Temperatures ◽  
Amorphous Silica ◽  
Selective Adsorption ◽  
Adsorption Of Co2

Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas

2020 ◽  
Vol 34 (2) ◽  
pp. 2097-2106 ◽  
Author(s):  
Qinglin Li ◽  
Hairong Zhang ◽  
Fen Peng ◽  
Can Wang ◽  
Hailong Li ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Selective Adsorption ◽  
Modified Attapulgite ◽  
Adsorption Of Co2

An Adsorbate Discriminatory Gate Effect in a Flexible Porous Coordination Polymer for Selective Adsorption of CO2 over C2H2

2016 ◽  
Vol 138 (9) ◽  
pp. 3022-3030 ◽  
Author(s):  
Maw Lin Foo ◽  
Ryotaro Matsuda ◽  
Yuh Hijikata ◽  
Rajamani Krishna ◽  
Hiroshi Sato ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Selective Adsorption ◽  
Gate Effect ◽  
Porous Coordination Polymer ◽  
Adsorption Of Co2

Porous Interdigitation Molecular Cage from Tetraphenylethylene Trimeric Macrocycles That Showed Highly Selective Adsorption of CO2 and TNT Vapor in Air

2018 ◽  
Vol 20 (2) ◽  
pp. 321-324 ◽  
Author(s):  
Jia-Bin Xiong ◽  
Jin-Hua Wang ◽  
Bao Li ◽  
Chun Zhang ◽  
Bien Tan ◽  
...  
Keyword(s):  
Selective Adsorption ◽  
Adsorption Of Co2

scholarly journals Enhanced N-doped Porous Carbon Derived from KOH-Activated Waste Wool: A Promising Material for Selective Adsorption of CO2/CH4 and CH4/N2

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 266 ◽  
Author(s):  
Yao Li ◽  
Ran Xu ◽  
Binbin Wang ◽  
Jianping Wei ◽  
Lanyun Wang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Selective Adsorption ◽  
Landfill Gas ◽  
Pure Component ◽  
Mixing Ratios ◽  
Ideal Adsorbed Solution Theory ◽  
Adsorption Capacities ◽  
Adsorbed Solution ◽  
Separation Of Co2 ◽  
Adsorption Of Co2

Separation of impurities (CO2 and N2) from CH4 is an important issue for natural gas alternatives (such as coalbed gas, biogas, and landfill gas) upgrading. It is notably challenging to synthesize high N-doped porous carbon with an appropriate porous structure. In this work, high N content (14.48 wt %) porous carbon with micropore size of 0.52 and 1.2 nm and specific surface area of 862 m2 g−1 has been synthesized from potassium hydroxide (KOH) activated waste wool upon the urea modification. Pure component adsorption isotherms of CO2, CH4, and N2 are systematically measured on this enhanced N-doped porous carbon at 0 and 25 °C, up to 1 bar, to evaluate the gases adsorption capability, and correlated with the Langmuir model. These data are used to estimate the separation selectivities for binary mixtures of CO2/CH4 and CH4/N2 at different mixing ratios according to the ideal adsorbed solution theory (IAST) model. At an ambient condition of 25 °C and 1 bar, the predicted selectivities for equimolar CO2/CH4 and CH4/N2 are 3.19 and 7.62, respectively, and the adsorption capacities for CO2, CH4, and N2 are 2.91, 1.01, and 0.13 mmol g−1, respectively. This report introduces a simple pathway to obtain enhanced N-doped porous carbon with large adsorption capacities for gas separation of CO2/CH4 and CH4/N2.

scholarly journals Adsorption of CO2 and Methane on Covalent Organic Polymer

2018 ◽  
Vol 43 ◽  
pp. 01001 ◽  
Author(s):  
Siew-Pei Lee ◽  
N. Mellon ◽  
Azmi M. Shariff ◽  
Jean-Marc Leveque
Keyword(s):  
Natural Gas ◽  
Selective Adsorption ◽  
Low Cost ◽  
Atmospheric Condition ◽  
Organic Polymer ◽  
Co2 Uptake ◽  
Co2 Removal ◽  
Gas Field ◽  
Adsorbent Regeneration ◽  
Adsorption Of Co2

Development of covalent organic polymer (COP) is a potential new class of adsorbent for CO2 separation from natural gas mainly due to their good hydrothermal stability, chemical tuning flexibility and low cost. CO2 and methane adsorption on COP-1 was studied under atmospheric condition (101.3 kPa, 298 K). COP-1 was synthesized via catalyst-free polycondensation of cyanuric chloride and piperazine. The properties of COP-1 were characterized using several analytical methods such as Fourier Transform Infra-Red (FTIR), N2 adsorption and desorption measurement and Field Transmission Electron Microscopy in coupled of Energy Dispersive X-ray Spectroscopy (FESEM-EDS). Reversible CO2 adsorption isotherm on COP-1 reflects low heat of adsorption which is beneficial to energy minimization in adsorbent regeneration process. Furthermore, moderate specific surface area COP-1 (88.5 m2/g) shows about nine times CO2 uptake higher than methane. The highly selective adsorption performance provides a promising insight in application of COP adsorbent for CO2 removal in natural gas field.

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