Hindered diffusion of coal liquids. Quarterly report No. 5, September 18, 1993--December 17, 1993
- Univ. of Southern California, Los Angeles, CA (United States). Dept. of Chemical Engineering
- UNOCAL Corp., Los Angeles, CA (United States)
The design of industrial catalysts requires that the diffusivity of the reacting species within the catalyst be accurately known. Nowhere is this more important than in the area of coal liquefaction and upgrading of coal liquids. In this area one is faced with the task of processing a number of heavy oils, containing metals and other contaminants, in a variety of process dependent solvents. It is important, therefore, on the basis of predicting catalyst activity, selectivity, and optimizing reactor performance, that the diffusivities of these oil species be accurately known. In this report, the authors report the publication of model studies of the diffusivity of Lennard-Jones particles in porous systems with dimensionality between two and three. Such a modeled system includes pillared clays. They also published a paper which addresses the sorption and aggregation of asphaltene particles with porous media such as catalysts. The paper presents new experimental data for the amount of asphalt precipitation formed with various solvents. The experimental results are compared to model calculations.
- Research Organization:
- University of Southern California, Los Angeles, CA (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-92PC92527
- OSTI ID:
- 10146102
- Report Number(s):
- DOE/PC/92527-T5; ON: DE94010733; TRN: 94:004992
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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