Phase diagram of a polydisperse soft-spheres model for liquids and colloids

The phase diagram of soft spheres with size dispersion is studied by means of an optimized Monte Carlo algorithm which allows us to equilibrate below the kinetic glass transition for all size distributions. The system ubiquitously undergoes a first-order freezing transition. While for a small size dispersion the frozen phase has a crystalline structure, large density inhomogeneities appear in the highly disperse systems. Studying the interplay between the equilibrium phase diagram and the kinetic glass transition, we argue that the experimentally found terminal polydispersity of colloids is a purely kinetic phenomenon.

Insight into the immobilization of ionic liquids on porous carbons

Very different carbon materials have been used as support in the preparation of supported ionic liquid phase samples (SILP). Some of them have been oxidized, either strongly (with ammonium persulfate solution) or weakly (with air at 300 °C, 2 h). The purpose is to establish which properties of the supports (e.g., porosity -volume and type-, surface area, oxygen surface chemistry and morphology) determine the IL adsorption capacity and the stability (immobilization) of the supported IL phase. The ionic liquid used in this work is 1-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF6]). For each support, samples with different amounts of ionic liquid have been prepared. The maximum IL that can be loaded depends mainly on the total pore volume of the supports. For comparable pore volumes, the porosity type and the oxygen surface content have no influence on the IL loading. The supported IL fills most of the pores, leaving some blocked porosity. The stability of the supported IL phase (especially important for its subsequent use in catalysis) has been tested in water under general hydrogenation conditions (60 °C and 10 bar H2). In general, leaching is low but it increases with the amount of IL loaded and with the oxidation treatments of the supports.

Proved discoveries and productive capacity of crude oil, natural gas, and natural gas liquids in the United States; a report.

Mode of access: Internet.

Manual for analysis of ethanol in biological liquids. Final report.

National Highway Traffic Safety Administration, Office of Driver and Pedestrian Research, Washington, D.C.

Observation blanks in physics; air -- liquids -- heat.

Mode of access: Internet.

Flammable fabrics act. Public law 88, chapter 164; 83d Congress, 1st session, H.R.5069.

Mode of access: Internet.

Analyses and projections of the historic patterns of U.S. domestic supply of crude oil, natural gas, and natural gas liquids; a study

Cover title.

The future supply of oil and gas; a study of the availability of crude oil, natural gas, and natural gas liquids in the United States in the period through 1975.

Includes bibliographies.

Coal-derived fuels in Illinois feasibility study : State of Illinois PL 96-126 proposal resource/technology area, A. Coal liquids /

Vol.2 has confidential material and is not available for circulation.