A5021933081- Advancements in Solid Oxide Fuel Cells
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Thermochemical Biomass Conversion Processes
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Zeolite Catalysis and Synthesis
- Electronic and Structural Properties of Oxides
- Catalysts for Methane Reforming
- Fuel Cells and Related Materials
- Adsorption and biosorption for pollutant removal
- Thermal and Kinetic Analysis
- Coal and Its By-products
- Catalysis for Biomass Conversion
- Mesoporous Materials and Catalysis
- Chemical Looping and Thermochemical Processes
- Carbon Dioxide Capture Technologies
- Gas Sensing Nanomaterials and Sensors
- Hydrocarbon exploration and reservoir analysis
- Subcritical and Supercritical Water Processes
- Petroleum Processing and Analysis
- Industrial Gas Emission Control
- Enhanced Oil Recovery Techniques
- Nanomaterials for catalytic reactions
- Advanced oxidation water treatment
University of Calgary
2015-2025
Calgary Laboratory Services
2015-2019
University of Wisconsin–Madison
1998-2000
Nanjing University
1999-2000
Western University
1995
University of Hawaii System
1977
Co-gasification of biomass, namely, switchgrass, with coal and fluid coke was performed to investigate the availability gasification catalysts mixed feedstock, especially alkali alkaline earth elements, naturally present on switchgrass. Rates CO2 single materials were measured at temperatures between 750 950 °C atmospheric pressure by thermogravimetry. High interparticle mobility is indicated a prompt lasting effect feed rate when compared separate rates. The switchgrass–coal mixtures show...
In this research note, we revisit the pseudo-second-order model for adsorption kinetics, its assumptions, and application to simulated, random, published data. particular, a widely used linear form of model—plotting t/qt against t—is shown result in spurious correlations typical experimental Depending on range data used, from pseudo-first-order pseudo-third-order models can also appear be well-fit by model. Inspection residual errors, however, indicates that errors are not randomly...
Solid oxide fuel cells (SOFC) have the advantage of being able to operate with fuels other than hydrogen. In particular, liquid are especially attractive for powering portable applications such as small power generators or auxiliary units, in which case direct utilization would be convenient. Although easier handle and transport hydrogen, their use SOFC can lead anode deactivation due carbon formation, on traditional nickel/yttria stabilized zirconia (Ni/YSZ) anodes. Significant advances...
This study evaluated the efficacy of using a combined biofilm-biochar approach to remove organic (naphthenic acids (NAs)) and inorganic (metals) contaminants from process water (OSPW) generated by Canada's oil sands mining operations. A microbial community sourced an OSPW sample was cultured as biofilms on several carbonaceous materials. Two biochar samples, softwood bark (SB) Aspen wood (N3), facilitated most growth (measured protein assays) were used for NA removal studies performed with...
The effects of exposure to ultraviolet (UV) light and ozone, separately in combination, were investigated with respect polypropylene (PP) poly(ethylene terephthalate) (PET) surfaces. Three combinations UV ozone studied: only, air (producing ozone), ozone) supplemented by additional the incoming air. effect time PP PET each treatment was studied. samples analyzed X-ray photoelectron spectroscopy (XPS) determine surface composition, dynamic contact angle water wettability. results showed that...
Oxidation is the most common surface modification of polymers. This paper presents a comparison five gas-phase oxidation processes: corona discharge, flame, remote air plasma, ozone, and combined UV/ozone treatments. Well-characterized biaxially oriented films polypropylene poly(ethylene terephthalate) were treated by each techniques. The surface-treated then analyzed X-ray photoelectron spectroscopy (XPS or ESCA), contact-angle measurements, Fourier-transform IR (FTIR) spectroscopy. Corona,...
The kinetics of K2CO3-catalyzed CO2 gasification ash-free coal was investigated with a thermogravimetric analyzer and compared to raw uncatalyzed coal. At 750 °C, the dry mixed 20 wt % K2CO3 approximately 3 60 times faster than without catalyst, respectively. Increasing amount catalyst from 45 increased rate 3-fold. containing potassium strongly depended upon pretreatment (i.e., heating gas atmosphere time) because it directly affected degree reduction. catalytic behavior could only be...
The removal of sulfur dioxide from flue gas is an important process for the mitigation acid rain. Activated carbons have a low affinity water and high polarizable molecules, such as dioxide, making them good candidates selective adsorbents gases. This work presents results on multicomponent adsorption N2/CO2/SO2 N2/CO2/SO2/H2O mixtures four activated prepared petroleum coke, one carbon black. Multicomponent was measured at T = 30, 60, 90 °C. All five had selectivity SO2 in both presence...
Microcalorimetric and infrared spectroscopic measurements for adsorption of ethylene on Pt/SiO2 Pt−Sn/SiO2 (5−8 wt % Pt) have been carried out at temperatures from 173 to 300 K. Ethylene Pt Pt−Sn lower than 233 K leads the formation π-bonded di-σ-bonded species. Ethylidyne species begin form higher 263 Formation ethylidyne is suppressed by presence Sn. The main surface observed during room temperature are Pt/SiO2, 7Pt/Sn/SiO2, 3Pt/Sn/SiO2. heat coadsorbed atomic hydrogen was found be 157...
Block copolymers self-assemble in bulk, forming a number of intricate block segregation patterns. Such assembled structures can serve as precursors to nano- or microstructures with numerous potential applications. For many applications, such catalysis, high surface area volume ratio is desirable, which requires "breaking up" copolymer solid into dispersed particles. Reported this letter the preparation water-dispersible microspheres containing Pd nanoparticles. The nanoparticles are more...