equilibrium adsorption property of multi-walled carbon nanotubes with oh group was studied using experimental design for the adsorption of co2 , ch4 and h2 . the effect of temperature, pressure, their binary interactions and quadratic terms were studied for adsorption capacity of nanotubes and the results were analyzed by the face centered central composite design method and analysis of varianc...

Equilibrium adsorption property of multi-walled carbon nanotubes with OH group was studied using experimental design for the adsorption of CO2 , CH4 and H2 . The effect of temperature, pressure, their binary interactions and quadratic terms were studied for adsorption capacity of nanotubes and the results were analyzed by the face centered central composite design method and analysis of varianc...

CO2 geosequestration is currently considered to be the most effective and economical method to dispose of artificial greenhouse gases. There are a large number of coal mines that will be scrapped, and some of them are located in deep formations in China. CO2 storage in abandoned coal mines will be a potential option for greenhouse gas disposal. However, CO2 trapping in deep coal pillars would i...

The Outburst can be defined as a sudden release of coal and rock accompanied by large quantities of gas into the underground coal mine workings which represents a major hazard in underground coal mines. Gas drainage has been proven to be successful in reducing outburst hazards by decreasing the in-situ gas pressure. One of aspect of gas drainage from coal seams is coal matrix volume changes. Cu...

In the field of electronic gas sensing, low-dimensional semiconductors such as single-walled carbon nanotubes (SWCNTs) can offer high detection sensitivity owing to their unprecedentedly large surface-to-volume ratio. The sensitivity and responsivity can further improve by increasing their areal density. Here, an accelerated gas adsorption is demonstrated by exploiting volumetric effects via di...

Please cite this article in press as: J. Moellmer e In order to explore the potential of novel open metal organic frameworks (MOFs) with soc topology for gas storage applications, we performed a systematic physical adsorption study with Hydrogen, Methane and Carbon dioxide as adsorptives over a wide range of temperatures (77–323 K) and pressures (0– 5 MPa) by using a volumetric low pressure ads...

Experimental data of methane adsorption on two types of activated carbon have been carried out at pressures up to 35 bar and at ambient temperature. Adsorption equilibrium and kinetics data at high pressure were measured using a volumetric method. A theoretical model has been presented to calculate the amount of adsorbed gas on adsorbents in a cylindrical tank. In the model, gas enters the bed ...

As part of our efforts to model enhanced coalbed methane recovery and CO2 sequestration in coalbeds, we have investigated the pure adsorption isotherm behavior of five dry coals namely, Illinois #6, Wyodak sub-bituminous, Pocahontas, Beulah Zap, and Upper Freeport coal. Using a volumetric technique, isotherms of pure methane, nitrogen, CO2 and ethane were measured at a temperature of 328.15 K (...

Using a density functional theory calculation including van der Waals (vdW) corrections, we report that H2 adsorption in a cubic-crystalline microporous metal-organic framework (MOF-5) leads to volume shrinkage, which is in contrast to the intuition that gas adsorption in a confined system (e.g., pores in a material) increases the internal pressure and then leads to volumetric expansion. This e...