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Active Catalyst Derived from Nb-containing Heteropoly Acids: Their Acid Properties and Catalysis in Friedel-Crafts Reactions
Heteropoly acid Friedel-Crafts reaction Support effect NMR EXAFS Temperature programmed desorption
2010/9/8
A ternary-mixed oxide catalyst, H3PO4-WO3-Nb2O5, was prepared with the evacuation of a mixed solution of phosphoric acid, niobic oxalate, and (NH4)10W12O41, followed by calcination in air. We found th...
The Properties of the Oils Obtained From Liquefaction of Poplar Wood Summary
Poplar wood liquefaction pyrolitic oil FTIR TGA
2009/10/14
The effects of various catalysts (Na2CO3 , K2CO3 and HCOOH ) on the liquefaction of 10 % aqueous slurry of poplar wood under high temperature and pressure conditions was investigated. The results of l...
Oxidative Regeneration of Resid Hydrodesulfurization Catalyst —Effect of Vanadium Accumulation on Properties and Activities of Regenerated Catalyst—
Oxidative regeneration Resid hydrodesulfurization Hydrodemetallation
2009/7/28
Resid hydrodesulfurization catalyst was regenerated after commercial operation and the effect of vanadium accumulation during resid hydrotreating reaction on the following catalyst regeneration was i...
Reduction of MoO3 to Porous Molybdenum Oxides and Its Catalytic Properties for Alkane Isomerization
Molybdenum trioxide Molybdenum hydrogen bronze Hydrogen reduction
2009/7/28
The catalytic activity of partially reduced Pt/MoO3 for alkane isomerization was investigated. The surface area of Pt/MoO3 was markedly enlarged by H2 reduction to a maximum after reduction at 673 K f...
Artificial Neural Networks Approach for Estimating Filtration Properties of Drilling Fluids
Static filtration Filtrate volume Permeability Artificial neural network
2009/7/28
Filtrate volume and permeability of filtercake are two main properties of drilling fluids. During this decade, various ways for estimating of them are proposed. In this study, a new approach based on...
Additive Effect of Carbon Nanohorn on Grease Lubrication Properties
Carbon nanohorn Grease Wear amount Load carrying capacity
2009/7/24
Recently, applications of the carbon nanohorn (CNH) have become of great interest in various industrial fields. The load carrying capacity and wear resistance of lithium soap grease containing CNH an...
Identification of Fracture Properties by Inverse Analysis of Tracer Tests Using Genetic Algorithms
Fracture Tracer test Inverse analysis CVBEM Genetic algorithm
2009/7/24
Any fractures present in a porous medium have a greater influence on the flow of fluid than the porosity of the bulk material because the fractures are much more permeable. The tracer test, one metho...
Viscosity Properties and Molecular Structure of Lube Base Oil Prepared from Fischer-Tropsch Waxes
Fischer-Tropsch wax α-Olefin Isomerization Lubricant base oil
2009/7/24
Lube base oils were prepared by hydrocracking/isomerization of Fischer-Tropsch synthesized waxes and long-chain α-olefins with various carbon chain lengths. Correlations between operation conditions,...
Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
Platinum tin catalyst Carbon support Carvone hydrogenation XAFS TPR
2009/7/24
Carbon-supported PtSn catalysts were prepared by impregnation using a commercial activated carbon after purification and oxidation (H2O2, 20 v/v%) treatments. The support surface chemistry of the car...
Composition and properties of solid alkanes extracted from a waxy petroleum fluids
Crude oil long residue alkanes thermal properties urea adduction flow behaviour
2010/8/11
Assam crude oil long residue (370oC+) is highly waxy/aromatic in nature associated with high pour point (51oC). The solid alkane components of this fraction extracted through urea adduction were analy...