Role of Transport Phenomena in the Impregnation of Porous   Media by Active Catalytic Materials
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'Robert M. Wellek', 'PO_EMAI': None, 'PO_PHON': None}
The effect of transport phenomena (including electrokinetic                     effects) during the preparation of supported metal catalysis by                 wet impregnation is examined theoretically.  A model for the                    transient diffusion - adsorption process coupled with the Poisson-              Boltzmann equation for the electrical potential (which arises because           of the presence of pH - dependent charged sites on the support                  surface) is developed for a cylindrical pore.  The influence of                 process variables, such as the pH and ionic strength of the                     impregnating solution and of the addition of a competing species on             the catalyst weight loading and distribution profile, is considered.            The question of the values of the process variables for given catalyst          design conditions is also addressed.  Detailed calculations are                 carried out for Pt on alumina catalyst.                                                                                                                         The relevance of the proposal resides in the fact that the                      appropriate conditions (pH, ionic strength, nature of the substrate             and concentration of the impregnant) for the preparation of the                 desired catalytic materials can be identified.  The novelty of the              approach consists in the inclusion of the electrokinetic phenomena in           the description of the impregnation process.  In this manner, the               charge of the substrate and the influence of the pH and ionic strength          on the impregnation process are taken into account.
{'FirstName': 'Eli', 'LastName': 'Ruckenstein', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Eli Ruckenstein', 'EmailAddress': 'feaeliru@buffalo.edu', 'NSF_ID': '000170265', 'StartDate': '07/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'SUNY at Buffalo', 'CityName': 'AMHERST', 'ZipCode': '142282577', 'PhoneNumber': '7166452634', 'StreetAddress': '520 LEE ENTRANCE STE 211', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '26', 'CONGRESS_DISTRICT_ORG': 'NY26', 'ORG_UEI_NUM': 'LMCJKRFW5R81', 'ORG_LGL_BUS_NAME': 'RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK, THE', 'ORG_PRNT_UEI_NUM': 'GMZUKXFDJMA9'}
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[{'Code': '1401', 'Text': 'Catalysis'}, {'Code': '1414', 'Text': 'INTERFAC PROCESSES & THERMODYN'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8806288.xml'}