Interfacial Ammonia Selectivity, Atmospheric Passivation, and Molecular Identification in Graphene-Nanopored Activated Carbon Molecular-Sieve Gas Sensors

2021 ◽  
Author(s):  
Osazuwa G. Agbonlahor ◽  
Manoharan Muruganathan ◽  
Sankar G. Ramaraj ◽  
Zhongwang Wang ◽  
Ahmed M.M. Hammam ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Molecular Identification ◽  
Gas Sensors ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve

scholarly journals Adsorption Dynamics of Activated Carbon and Carbon Molecular Sieve Beds for Ethylene Recovery

2012 ◽  
Vol 50 (3) ◽  
pp. 527-534
Author(s):  
Ki-Yong Yoon ◽  
Phillip Jun ◽  
En-Ji Woo ◽  
Hyungwoong Ahn ◽  
Chang-Ha Lee
Keyword(s):  
Activated Carbon ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Adsorption Dynamics

scholarly journals Evaluation of Activated Carbon, Molecular Sieve and Palladium as Ethylene Absorbent. Studies on Prevention of Ethylene Accumulation to Retain Quality of Fruits and Vegetables Part1.

1996 ◽  
Vol 22 (4) ◽  
pp. 191-197
Author(s):  
Ichiji YAMASHITA ◽  
Hiroki KAWASHIMA ◽  
Yasuhito KONDOH ◽  
Kazuhiro DAN ◽  
Masayasu NAGATA
Keyword(s):  
Activated Carbon ◽  
Molecular Sieve ◽  
Fruits And Vegetables ◽  
Carbon Molecular Sieve

Development of Anion Stereoselective, Activated Carbon Molecular Sieve Electrodes Prepared by Chemical Vapor Deposition

2009 ◽  
Vol 113 (17) ◽  
pp. 7316-7321 ◽  
Author(s):  
Malachi Noked ◽  
Eran Avraham ◽  
Yaniv Bohadana ◽  
Abraham Soffer ◽  
Doron Aurbach
Keyword(s):  
Activated Carbon ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Molecular Sieve ◽  
Chemical Vapor ◽  
Carbon Molecular Sieve

scholarly journals Equilibrium and kinetics of nitrous oxide, oxygen and nitrogen adsorption on activated carbon and carbon molecular sieve

2019 ◽  
Vol 223 ◽  
pp. 63-80 ◽  
Author(s):  
Dooyong Park ◽  
Youngsan Ju ◽  
Jeong-Hoon Kim ◽  
Hyungwoong Ahn ◽  
Chang-Ha Lee
Keyword(s):  
Nitrous Oxide ◽  
Activated Carbon ◽  
Molecular Sieve ◽  
Nitrogen Adsorption ◽  
Carbon Molecular Sieve ◽  
Nitrous Oxide Oxygen ◽  
Equilibrium And Kinetics ◽  
Kinetics Of

scholarly journals Surface Characteristics of Different Wood and Coal-Based Activated Carbons for Preparation of Carbon Molecular Sieve

2019 ◽  
Vol 63 (2) ◽  
Author(s):  
Fariba Malekian ◽  
H. GHAFOURIAN ◽  
K. ZARE ◽  
A. A. SHARIF ◽  
Y. ZAMANI
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Pore Volume ◽  
Molecular Sieve ◽  
Activated Carbons ◽  
Rotary Furnace ◽  
Surface Characteristics ◽  
Particle Sizes ◽  
Carbon Molecular Sieve ◽  
N2 Adsorption

Abstract. In this study, four different nanostructures precursors, pistachio wood, walnuts wood, forest wood and coal (Anthracite) were selected to produce activated carbon. The experiments were done in industrial scale using a rotary furnace with temperature between 850 and 920 ºC for 45 minutes followed by steam. The product was grounded and divided in three particle sizes, 8x30, 30x50, and 60x80 meshes. The physical properties and surface chemistry of the activated carbon samples were determined by imaging of BET-N2 adsorption. The results obtained from measurements of iodine and methylene blue numbers, surface area, pore volume and comparison of surface area and pore volume, show that by decreasing of particle sizes of each sample, increase the surface area and micro pore volumes significantly. The magnitude of changes in surface area with particle size is a significant factor in defining the effectiveness and suitability of an activated carbon for the production of carbon molecular sieve. Our results indicate that the highest pore volume belongs to pistachio wood, which was increased from 0.168 to 0.271 cm3/g from 8x30 to 60x80 mesh.                                         Resumen. En este estudio, se seleccionaron cuatro precursores de nanoestructuras diferentes, madera de pistache, madera de nueces, madera de bosque y carbón (antracita) para producir carbón activado. Los experimentos se realizaron a escala industrial utilizando un horno rotatorio con una temperatura entre 850 y 920 ºC durante 45 minutos, seguido de vapor. El producto se molió y se dividió en tres tamaños de partículas, en mallas de 8x30, 30x50 y 60x80. Las propiedades físicas y la química de la superficie de las muestras de carbón activado se determinaron mediante imágenes de la adsorción de BET-N2. Los resultados obtenidos de las mediciones de los números de yodo y azul de metileno, área de superficie, volumen de poros y comparación de área de superficie y volumen de poros muestran que, al disminuir los tamaños de partícula de cada muestra, aumenta significativamente el área de superficie y los volúmenes de microporos. La magnitud de los cambios en el área de la superficie con el tamaño de partícula es un factor significativo en la definición de la efectividad y la idoneidad de un carbón activado para la producción de tamiz molecular de carbono. Nuestros resultados indican que el mayor volumen de poros pertenece a la madera de pistache, que aumentó de la malla de 0.168 a 0.271 cm3/g de 8x30 a 60x80.

Biomass-based palm shell activated carbon and palm shell carbon molecular sieve as gas separation adsorbents

2015 ◽  
Vol 33 (4) ◽  
pp. 303-312 ◽  
Author(s):  
Sumathi Sethupathi ◽  
Mohammed JK Bashir ◽  
Zinatizadeh Ali Akbar ◽  
Abdul Rahman Mohamed
Keyword(s):  
Activated Carbon ◽  
Gas Separation ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Palm Shell

scholarly journals Hyperaging Tuning of a Carbon Molecular‐Sieve Hollow Fiber Membrane with Extraordinary Gas‐Separation Performance and Stability

2019 ◽  
Vol 58 (34) ◽  
pp. 11700-11703 ◽  
Author(s):  
Wulin Qiu ◽  
Justin Vaughn ◽  
Gongping Liu ◽  
Liren Xu ◽  
Mark Brayden ◽  
...  
Keyword(s):  
Gas Separation ◽  
Hollow Fiber ◽  
Molecular Sieve ◽  
Hollow Fiber Membrane ◽  
Separation Performance ◽  
Fiber Membrane ◽  
Carbon Molecular Sieve ◽  
Gas Separation Performance

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.

Sign in / Sign up

Export Citation Format

Share Document