Adsorption of light hydrocarbon mixtures on molecular sieving carbon MSC-5A.

Carbon Molecular Sieves for Hydrocarbon Separations by Adsorption

Continuously Adjustable, Molecular-Sieving “Gate” on 5A Zeolite for Distinguishing Small Organic Molecules by Size

Zeolites/molecular sieves with uniform, molecular-sized pores are important for many adsorption-based separation processes. Pore size gaps, however, exist in the current zeolite family. This leads to a great challenge of separating molecules with size differences at ~0.01 nm level. Here, we report a novel concept, pore misalignment, to form a continuously adjustable, molecular-sieving "gate" at...

Effects of Water Content on SO2/N2 Binary Adsorption Capacities of 13X and 5A Molecular Sieve, Experiment, Simulation, and Modeling

In this work, SO2 adsorption on 13X and 5A was explored at different concentrations, and the results were compared to molecular simulation and models. The adsorbent saturation tests were performed at four different concentrations of 250, 500, 750, and 1000 ppm, and it was observed that saturation would take more time for higher SO2 concentrations. Grand Canonical Monte Carlo method was used for...

Preparation and Characterization of Molecular Sieving Carbon by Methane and Benzene Cracking over Activated Carbon Spheres

Molecular sieving carbon (MSC) for separating O 2 -N 2 and CO 2 -CH 4 has been prepared through chemical vapor deposition (CVD) of methane and benzene on activated carbon spheres (ACS) derived from polystyrene sulfonate beads. The validity of the material for assessment of molecular sieving behavior for O 2 -N 2 and CO 2 -CH 4 pair of gases was assessed by the kinetic adsorption of the correspo...

Predicting Adsorption of Water/Organic Mixtures Using Molecular Simulation

The use of Monte Carlo simulation to predict the adsorption of mixtures of polar and nonpolar species on acti®ated carbon was in®estigated using water and ethane on BPL carbon as a prototype system. The structure of the adsorbent was modeled by an array of slit-shaped pores, characterized by a pore-size distribution. The chemical heterogeneity of the carbon was taken into account by including o...