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1. Characterization of the mechanism of gasification of a powder river basin coal with a composite catalyst for producing desired syngases and liquids

Author

Monterroso, Rodolfo, Fan, Maohong, Argyle, Morris D, Varga, Krisztina, Dyar, Darby, Tang, Jinke, Sun, Qingyun, Towler, Brian, Elliot, Korth Wade, and Kammen, Daniel

Subjects
Physical Chemistry (incl. Structural), Chemical Engineering, Physical Chemistry
Abstract

The objective of this research was to examine the mechanisms of FeCO 3, Na2CO3, and FeCO3-Na 2CO3 based catalytic coal gasification of a low-sulfur sub-bituminous Wyodak coal from the Powder River Basin (PRB) of Wyoming. X-ray diffraction (XRD), Mössbauer spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), gas chromatography (GC-MS) and nuclear magnetic resonance spectroscopy (NMR) were used to perform the analyses. Use of composite catalysts for coal gasification overcomes some of the limitations of the standalone use of Na or Fe catalysts. The XRD results are consistent with interactive mechanisms or the formation of Na-Fe oxides as the catalytic pathway. Mössbauer spectroscopy indicated the presence of metallic iron and cementite in the char at different stages. The Fe catalysts were better at tar decomposition than the Na catalysts, as indicated by GC-MS analyses. NMR spectra confirmed that tar compositions vary with the catalytic mechanism. FTIR analysis confirmed the presence of high yields of aromatic components and long aliphatic chains in the tar. Composite Fe-Na catalysts provide a method to tailor the amounts and composition of product generated during gasification. © 2014 Elsevier B.V. All rights reserved.

Published
2014

8. Just seventeen: corporate social responsibility reporting is still at a formative stage, and British businesses are disclosing differing levels of information in a variety of ways in the absence of mandatory standards. Samuel Idowu and Brian Towler study a stream of conscientiousness from 17 companies to compare how and what they report

Author

Idowu, Samuel and Towler, Brian

Subjects
Corporation reports -- Standards -- Surveys, Corporate social responsibility -- Surveys, Business enterprises -- Surveys, Banking, finance and accounting industries, Business, Business, international, Standards, Surveys
Abstract

Businesses around the world have recognised that they can gain enormous benefits if they are seen to be socially responsible. The corporate social responsibility (CSR) report is the medium that [...]

Published
2003

9. The Future of Energy

Author

Towler, Brian F., Towler, Brian F., Towler, Brian F., and Towler, Brian F.

Abstract

Using the principle that extracting energy from the environment always involves some type of impact on the environment, The Future of Energy discusses the sources, technologies, and tradeoffs involved in meeting the world's energy needs. A historical, scientific, and technical background set the stage for discussions on a wide range of energy sources, including conventional fossil fuels like oil, gas, and coal, as well as emerging renewable sources like solar, wind, geothermal, and biofuels. Readers will learn that there are no truly "green" energy sources—all energy usage involves some tradeoffs—and will understand these tradeoffs and other issues involved in using each energy source. Each potential energy source includes discussions of tradeoffs in economics, environmental, and policy implications Examples and cases of implementing each technology are included throughout the book Technical discussions are supported with equations, graphs, and tables Includes discussions of carbon capture and sequestration as emerging technologies to manage carbon dioxide emissions

Published
2014

11. Wax prevention and remediation in subsea pipelines and flowlines

Author

Mokhatab, Saeid and Towler, Brian

Subjects
Paraffin wax -- Evaluation, Petroleum industry -- Environmental aspects, Business, Petroleum, energy and mining industries
Abstract

As the industry moves to ultradeep water, mitigation alternatives will be critical to sustain production efficiency. Vol. 230 No. 11 DEEPWATER TECHNOLOGYWax prevention and remediation in subsea pipelines and flowlinesAs [...]

Published
2009

14. Geomechanics modeling for better drilling performance.

Author

Wang, Hong (Max), Soliman, Mohamed Y., Zhaohui Shan, and Towler, Brian F.

Subjects
OIL well drilling, PETROLEUM industry, PETROLEUM prospecting, OIL fields, FOSSIL fuels, PETROLEUM engineering, PRODUCTION methods in oil fields, OIL wells
Abstract

The article reports on the research conducted on the significance of geomechanics modeling to the petroleum and oil industry in the U.S. Researchers found that the technology enables petroleum and oil companies to optimize their drilling performance by increasing the rate of penetration (ROP) and the non productive time (NPT). It also provides the basis for bit selection and drilling parameter optimization, wellbore-stability analysis and lost-circulation prevention and control. Aside from drilling, geomechanics can be extended to completion and production optimization for sand control, simulation and a vital role in drilling and other petroleum-engineering aspects.

Published
2008

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