A simple model and experiments for adsorption-desorption hysteresis: Water vapor on silica gel

Journal Article · Sat May 01 04:00:00 EDT 1993 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690390506· OSTI ID:6314639

Rajniak, P; Yang, R T ^[1]

---

1. State Univ. of New York, Buffalo (United States)

A simple model is proposed for the evaluation of the primary and secondary adsorption and desorption processes for hysteresis-dependent sorption systems. The model is based on the use of pore blocking interpretation of hysteresis in an interconnected network of pores. The model is simple to use and requires only the primary adsorption and primary desorption isotherms to predict all secondary desorption curves covering the hysteresis loop (appearing in the range of relative pressure 0.3-0.7) was measured for water vapor on silica gel at 25[degree]C. The usefulness of the model is supported by its agreement with experimental data.

• OSTI ID: 6314639
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Journal Name: AIChE Journal (American Institute of Chemical Engineers); (United States) Vol. 39:5; ISSN 0001-1541; ISSN AICEAC
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ADSORBENTS
ADSORPTION
ADSORPTION ISOTHERMS
DATA
DESORPTION
EQUILIBRIUM
EXPERIMENTAL DATA
FLUIDS
GASES
HYSTERESIS
INFORMATION
ISOTHERMS
MATHEMATICAL MODELS
MICROSTRUCTURE
NUMERICAL DATA
POROSITY
SEPARATION EQUIPMENT
SILICA GEL
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
VAPORS
WATER VAPOR