scholarly journals Carbon molecular sieve membrane from a microporous spirobisindane-based polyimide precursor with enhanced ethylene/ethane mixed-gas selectivity

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3265-3272 ◽  
Author(s):  
Octavio Salinas ◽  
Xiaohua Ma ◽  
Yingge Wang ◽  
Yu Han ◽  
Ingo Pinnau
Keyword(s):  
Molecular Sieve ◽  
Mixed Gas ◽  
Carbon Molecular Sieve ◽  
Gas Selectivity ◽  
Polyimide Precursor

A highly selective carbon molecular sieve (CMS) membrane derived from a novel spirobisindane-based polyimide was synthesized. The mixed-gas ethylene/ethane selectivity of 15.6 at 20 bar is the highest reported value for CMS-type membranes to date.

The influence of synthesis parameters on the gas selectivity and permeability of carbon membranes: empirical modeling and process optimization using surface methodology

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14149-14163 ◽  
Author(s):  
Shokofeh Heydari ◽  
Vahid Pirouzfar
Keyword(s):  
Gas Separation ◽  
Process Optimization ◽  
Molecular Sieve ◽  
Empirical Modeling ◽  
Carbon Molecular Sieve ◽  
Carbon Membranes ◽  
Synthesis Parameters ◽  
Gas Transport Properties ◽  
The Common ◽  
Gas Selectivity

One of the common polyimides, P84 HT (BTDA-TDI/MDI), was used to synthesize gas separation carbon molecular sieve (CMS) membranes and study their gas transport properties.

Carbon molecular sieve gas separation membranes based on an intrinsically microporous polyimide precursor

Carbon ◽  
2013 ◽  
Vol 62 ◽  
pp. 88-96 ◽  
Author(s):  
Xiaohua Ma ◽  
Raja Swaidan ◽  
Baiyang Teng ◽  
Hua Tan ◽  
Octavio Salinas ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Polyimide Precursor

scholarly journals Ultra-selective carbon molecular sieve membranes for natural gas separations based on a carbon-rich intrinsically microporous polyimide precursor

2019 ◽  
Vol 585 ◽  
pp. 1-9 ◽  
Author(s):  
Khalid Hazazi ◽  
Xiaohua Ma ◽  
Yingge Wang ◽  
Wojciech Ogieglo ◽  
Abdulrahman Alhazmi ◽  
...  
Keyword(s):  
Natural Gas ◽  
Molecular Sieve ◽  
Gas Separations ◽  
Carbon Molecular Sieve ◽  
Polyimide Precursor

scholarly journals A MEMS µ-Preconcentrator Employing a Carbon Molecular Sieve Membrane for Highly Volatile Organic Compound Sampling

Chemosensors ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 104
Author(s):  
Hung-Yang Kuo ◽  
Wei-Riu Cheng ◽  
Tzu-Heng Wu ◽  
Horn-Jiunn Sheen ◽  
Chih-Chia Wang ◽  
...  
Keyword(s):  
Organic Compound ◽  
Organic Compounds ◽  
Volatile Organic Compound ◽  
Molecular Sieve ◽  
Amplification Factor ◽  
Microfluidic Channel ◽  
Carbon Molecular Sieve ◽  
Volatile Organic ◽  
Chromatographic Peaks ◽  
Gaseous Toluene

This paper presents the synthesis and evaluation of a carbon molecular sieve membrane (CMSM) grown inside a MEMS-fabricated μ-preconcentrator for sampling highly volatile organic compounds. An array of µ-pillars measuring 100 µm in diameter and 250 µm in height were fabricated inside a microfluidic channel to increase the attaching surface for the CMSM. The surface area of the CMSM was measured as high as 899 m2/g. A GC peak amplification factor >2 × 104 was demonstrated with gaseous ethyl acetate. Up to 1.4 L of gaseous ethanol at the 100 ppb level could be concentrated without exceeding the capacity of this microchip device. Sharp desorption chromatographic peaks (<3.5 s) were obtained while using this device directly as a GC injector. Less volatile compounds such as gaseous toluene, m-xylene, and mesitylene appeared to be adsorbed strongly on CMSM, showing a memory effect. Sampling parameters such as sample volatilities, sampling capacities, and compound residual issues were empirically determined and discussed.

Carbon molecular sieve based micro-matrix-solid-phase dispersion for the extraction of polyphenols in pomegranate peel by UHPLC-Q-TOF/MS

2018 ◽  
Vol 39 (17) ◽  
pp. 2218-2227 ◽  
Author(s):  
Li-Jing Du ◽  
Jian-Ping Huang ◽  
Bin Wang ◽  
Chen-Hui Wang ◽  
Qiu-Yan Wang ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Solid Phase ◽  
Carbon Molecular Sieve ◽  
Pomegranate Peel ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Tof Ms

scholarly journals A Self‐Consistent Model for Sorption and Transport in Polyimide‐Derived Carbon Molecular Sieve Gas Separation Membranes

2020 ◽  
Vol 132 (46) ◽  
pp. 20523-20527
Author(s):  
Oishi Sanyal ◽  
Samuel S. Hays ◽  
Nicholas E. León ◽  
Yoseph A. Guta ◽  
Arun K. Itta ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Consistent Model ◽  
Self Consistent
Sign in / Sign up

Export Citation Format

Share Document