caa a22 4500 469111453 CHVBK 20180323133112.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02047115 doi (NATIONALLICENCE)springer-10.1007/BF02047115 Radiation-induced effects on alternative fuels [Elektronische Daten] II. X-ray irradiation of asphaltenes from coal [F. Lanças, E. Carrilho, D. Dibo] Asphaltenes obtained from high-ash coal by precipitation with n-hexane were X-ray irradiated at different doses. The gases evolved from the irradiated samples consist mainly of ethane and propane. The condensed matter obtained upon irradiation was fractionated by Preparative Liquid Chromatography (PLC) into 8 discrete fractions and its relative distribution was studied as a function of the irradiation doses. Based on the product distribution as well as the analysis of the initial sample using PLC, GPC and IV and NMR spectroscopies, a mechanism is proposed to explain the X-ray effects on the irradiation of asphaltenes. Akadémiai Kiadó, 1992 Lanças F. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut Carrilho E. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut Dibo D. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 283-292 0236-5731 158:2<283 1992 158 10967 https://doi.org/10.1007/BF02047115 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02047115 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lanças F. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut NATIONALLICENCE 700 1- Carrilho E. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut NATIONALLICENCE 700 1- Dibo D. Instituto de Fisica e Química de São Carlos, Universidade de São Paulo, 13560, São Carlos, SP, (Brazil) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 283-292 0236-5731 158:2<283 1992 158 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 46572955X BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer