Interest AreasSpecific problems of environmental pollution have been addressed through the development of improved methods for removing sulfur and ash-forming mineral matter from coal and by the development of a method for regenerating calcium-based sorbents that are used to remove sulfur compounds from the products of coal gasification or coal combustion. This effort is being extended to the development of a combined catalyst and sorbent for use in steam reforming hydrocarbons to produce hydrogen.The research effort is based on an extensive background of experience gained by studying a number of potentially useful methods for cleaning and/or utilizing coal. These methods have included both chemical leaching and particle separation processes as well as coal gasification by means of a unique electrothermal fluidized bed reactor. The present effort is also based on experience gained in developing an unusual cyclic process for decomposing calcium sulfate in a two-zone fluidized bed reactor whereby the material is exposed alternately and repeatedly to reduction and oxidation at high temperature.
Brief BiographyHonors and Awards
Margaret Ellen White Graduate Faculty Award, 1999
University Professor, 1994
Governors Science Medal for Science Achievement, 1990
Fellow of Iowa Academy of Science, 1988
Fellow of AIChE, 1987
MASUA Honors Lecturer, 1980-81
Faculty Citation, ISU Alumni Association, 1974
Selected PublicationsD.C. Ozcan, B.H. Shanks, and T.D. Wheelock, "Improving the Stability of a CaO-based Sorbent for Co2 by Thermal Pretreatment," Ind. Eng. Chem. Res., 50, 6933-6942 (2011).
K. O. Albrecht, J. A. Satrio, B. H. Shanks, and T. D. Wheelock, "Application of a Combined Catalyst and Sorbent for Steam Reforming of Methane," Ind. Eng. Chem. Res. , 49 , 4091-4098 (2010).
K. O. Albrecht, K. S. Wagenbach, J. A. Satrio, B. H. Shanks, and T. D. Wheelock, "Development of a CaO-Based CO 2 Sorbent with Improved Cyclic Stability," Ind. Eng. Chem. Res. , 47 , 7841-7848 (2008).
T. D. Wheelock and B. H. Shanks, "Catalyst and Sorbent Material for the Production of Hydrogen," U.S. Patent 7,176,159 B1, February 13, 2007.
J. A. Satrio, B. H. Shanks, and T. D. Wheelock, Development of a Novel Combined Catalyst and Sorbent for Hydrocarbon Reforming, Ind. Eng. Chem. Res ., 44 , 3901-3911 (2005).
J. Drzymala, J. T. Gorke, and T. D. Wheelock, A Flotation Collector for the Separation of Unburned Carbon from Fly Ash, Coal Preparation , 25 , 67-80 (2005).
T. D. Wheelock and T. T. Akiti, Jr., "Core-in-Shell Sorbent for Hot Coal Gas Desulfurization," U.S. Patent 6,689,714 B2, February 10, 2004.
T. D. Wheelock and Meiyu Shen, "Coal Beneficiation by Gas Agglomeration," U.S. Patent 6,632,258 B1, October 14, 2003.
D. J. L. Hasler, L. K. Doraiswamy, and T. D. Wheelock, "A Plausible Model for the Sulfidation of a Calcium-Based Core-in-Shell Sorbent," Industrial and Engineering Chemistry Research , 42 , 2644-2653 (2003).
T. T. Akiti, Jr., K. P. Constant, L. K. Doraiswamy, and T. D. Wheelock, "A Regenerable Calcium-Based Core-in-Shell Sorbent for Desulfurizing Hot Coal Gas," Industrial and Engineering Chemistry Research , 41 , 587-597 (2002).
J. A. B. Satrio, S. B. Jagtap, and T. D. Wheelock, "Utilization of Sulfur Oxides for the Production of Sodium Sulfate," Industrial and Engineering Chemistry Research , 41 , 3540-3547 (2002).
T. T. Akiti, Jr., K. P. Constant, L. K. Doraiswamy, and T. D. Wheelock, "Development of an advanced calcium-based sorbent for desulfurizing hot coal gas," Advances in Environmental Research , 5 , 31-38 (2001).
M. Shen and T. D. Wheelock, "Development and scale-up of a gas-promoted oil agglomeration process for coal beneficiation," Minerals and Metallurgical Processing , 18, No. 2, 87-94 (2001).
T. D. Wheelock, "Gas Distribution System for a Two-Zone Fluidized Bed Reactor," U.S. Patent 6,197,265 B1, March 6, 2001.
M. Shen and T. D. Wheelock, "Coal Agglomeration with Microbubbles," Coal Preparation , 21 , 277-298 (2000).