Reaction (1) is called “hydrogenation,” reaction (2) “selective hydrocracking,” and reaction (3) “nonselective hydrocracking.” On Pd, It-, and Pt only reaction (1) is observed, while Co, Rh, and OS are active for reactions (1) and (2), and Fe, Ni, and Ru are able to catalyze all three reactions (I-5). The structure sensitivity of the three cyclopropane reactions on Ru catalysts has not yet been...

Hydrocracking is an important secondary process in the petroleum industry, generally used to process heavy oil cuts. The process is tailored to various needs of refineries in order to maximize middle distillates, gasoline, LPG and similar products. Therefore, kinetic modeling of hydrocracking reactors applied to upgrade vacuum heavy oil (Isomax) is important and needs to be investigated. In thi...

Biomass gasification has yet to obtain industrial acceptance. The high residual tar concentrations in syngas prevent any ambitious utilization. In this paper a novel gas purification technology based on catalytic hydrocracking is introduced, whereby most of the tarry components can be converted and removed. Pilot scale experiments were carried out with an updraft gasifier. The hydrocracking cat...

This paper reports the synthetic route of 3-D network shape α-Fe2O3 from aqueous solutions of iron precursor using a non-ionic polymeric soft-template, Pluronic P123. During the synthesis of α-Fe2O3, particle sizes, crystal phases and morphologies were significantly influenced by pH, concentrations of precursor and template. The unique shape of worm-like hematite was obtained only when a starti...

BIOFUELS PRODUCTION FROM HYDROTREATING OF VEGETABLE OIL USINGSUPPORTED NOBLE METALS, AND TRANSITION METAL CARBIDE AND NITRIDEbyHUALI WANGMay 2012Advisors: Dr. K. Y. Simon Ng and Dr. Steven O. SalleyMajor: Chemical EngineeringDegree: Doctor of PhilosophyThe focus of this research is to prepare non-sulfided hydrotreating catalysts, supportednoble metal and ...

To substitute for petroleum, Fischer-Tropsch synthesis (FTS) is an environmentally benign process to produce synthetic diesel (n-paraffin) from syngas. Industrially, the synthetic gasoline (iso-paraffin) can be produced with a FTS process followed by isomerization and hydrocracking processes over solid-acid catalysts. Herein, we demonstrate a cobalt nano-catalyst synthesized by physical-sputter...

A suitable model for predicting the product quality of vacuum gas oil (VGO) catalytic hydrocracking is developed. Data were obtained using an experimental catalytic hydrocracking reactor loaded with the Ni-Mo/Al2O3-SiO2 catalyst. A set of experimental runs was conducted under various operating temperatures from 380 to 450 ℃. Three distribution models were used t...

Hydrocarbon oils of the alga Botryococcus braunii, extracted from a natural "bloom" of the plant, have been hydrocracked to produce a distillate comprising 67% gasoline fraction, 15% aviation turbine fuel fraction, 15% diesel fuel fraction, and 3% residual oil. The distillate was examined by a number of standard petroleum industry test methods. This preliminary investigation indicates that the ...