Selective adsorption of unsaturated linear C4 molecules on the all-silica DD3R

Literature Information

Publication Date 2000-03-31
DOI 10.1039/A909812G
Impact Factor 3.676
Authors

W. Zhu, F. Kapteijn, J. A. Moulijn, J. C. Jansen


View Original

Abstract

The adsorption of but-1-ene, buta-1,3-diene, cis-but-2-ene and trans-but-2-ene on the all-silica DD3R has been investigated using a tapered element oscillating microbalance (TEOM). The single-component adsorption isotherms of buta-1,3-diene and trans-but-2-ene are reported for the first time at temperatures in the range from 303 to 473 K and at pressures up to 1.5×105 Pa. The Langmuir isotherm appropriately describes their equilibrium data of adsorption on the all-silica DD3R. The analysis of thermodynamic properties such as isosteric heat and entropy of adsorption indicates that the adsorbent is energetically uniform. Transient experiments reveal that the 8-ring windows of the all-silica DD3R are accessible to buta-1,3-diene and trans-but-2-ene molecules, while they exclude but-1-ene and cis-but-2-ene molecules. High adsorption selectivities suggest that the all-silica DD3R might be an effective adsorbent for the separation or purification of C4 mixtures.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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