• Ph.D. in Inorganic Chemistry (University of British Columbia) in 1991. Supervisor. Dr. B. R. James.
• Postdoctoral appointment (University of Toronto), 1991-1992. Supervisor: Dr. R. H. Morris.
• Contract research (Research Development Corp. of Japan), 1993-1996. Supervisor: Dr. Ryoji Noyori (Nobel Prize 2001).
• Assistant Professor (University of California, Davis), 1996-2003. Adjunct associate professor 2003-2006.
• Associate Professor (Queen's University, Dept. of Chemistry), 2003-2007.
• Full professor (Queen's University, Dept. of Chemistry), 2007 - present.
• Cross-appointed to Department of Environmental Studies, 2006 - present.
• Technical Director (GreenCentre Canada), 2009 - present.

• Killam Research Fellowship (Killam Trusts), 2010.
• NSERC John C. Polanyi Award (NSERC), 2009.
• Outstanding Faculty Advisor (UCDavis), 1999.
• Canada Research Chair (Queen's University), 2003-present.
• Canadian Catalysis Lectureship Award (Canadian Catalysis Foundation), 2004.

• Conference Chair, 3rd Annual IUPAC Conference on Green Chemistry, August 2010.
• Technical Director, GreenCentre Canada
• Governing Board, Green Chemistry Institute, ACS.
• Advisory Board, Green Chemistry (RSC journal)
• International Advisory Board, ChemSusChem (Wiley journal)
• IUPAC Subcommittee on Green Chemistry
• Board of Directors, Canadian Green Science & Technology Network.
• International Advisory Board and Board of Directors, FQRNT Centre in Green Chemistry and Catalysis, Quebec.
• Conference Chair, 3rd Annual IUPAC Conference on Green Chemistry, August 2010.
• Toxics Reduction Expert Panel, Ministry of the Environment, Government of Ontario, 2008.
• Co-chair of the CHEMRAWN-XVII and ICCDU-IX Conference on Grenhouse Gases, July 2007.
• Green Chemistry and Engineering Subdivision ACS Chair, 2006.

• P. G. Jessop and W. Leitner (eds.), Green Solvents, Vol. 4: Supercritical Solvents, VCH-Wiley, 2010.
• P. G. Jessop and W. Leitner (eds.), Chemical Synthesis using Supercritical Fluids, VCH-Wiley, Weinheim, 1999.