000102121 001__ 102121
000102121 005__ 20230519145405.0
000102121 0247_ $$2doi$$a10.1039/d0ra08541c
000102121 0248_ $$2sideral$$a124344
000102121 037__ $$aART-2021-124344
000102121 041__ $$aeng
000102121 100__ $$aPapageridis, K.N.
000102121 245__ $$aContinuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al2O3 and La2O3-Al2O3
000102121 260__ $$c2021
000102121 5060_ $$aAccess copy available to the general public$$fUnrestricted
000102121 5203_ $$aThe present study provides, for the first time in the literature, a comparative assessment of the catalytic performance of Ni catalysts supported on ¿-Al2O3and ¿-Al2O3modified with La2O3, in a continuous flow trickle bed reactor, for the selective deoxygenation of palm oil. The catalysts were preparedviathe wet impregnation method and were characterized, after calcination and/or reduction, by N2adsorption/desorption, XRD, NH3-TPD, CO2-TPD, H2-TPR, H2-TPD, XPS and TEM, and after the time-on-stream tests, by TGA, TPO, Raman and TEM. Catalytic experiments were performed between 300-400 °C, at a constant pressure (30 bar) and different LHSV (1.2-3.6 h-1). The results show that the incorporation of La2O3in the Al2O3support increased the Ni surface atomic concentration (XPS), affected the nature and abundance of surface basicity (CO2-TPD), and despite leading to a drop in surface acidity (NH3-TPD), the Ni/LaAl catalyst presented a larger population of medium-strength acid sites. These characteristics helped promote the SDO process and prevented extended cracking and the formation of coke. Thus, higher triglyceride conversions andn-C15ton-C18hydrocarbon yields were achieved with the Ni/LaAl at lower reaction temperatures. Moreover, the Ni/LaAl catalyst was considerably more stable during 20 h of time-on-stream. Examination of the spent catalysts revealed that both carbon deposition and degree of graphitization of the surface coke, as well as, the extent of sintering were lower on the Ni/LaAl catalyst, explaining its excellent performance during time-on-stream.
000102121 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000102121 590__ $$a4.036$$b2021
000102121 592__ $$a0.667$$b2021
000102121 594__ $$a5.9$$b2021
000102121 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b75 / 180 = 0.417$$c2021$$dQ2$$eT2
000102121 593__ $$aChemistry (miscellaneous)$$c2021$$dQ1
000102121 593__ $$aChemical Engineering (miscellaneous)$$c2021$$dQ1
000102121 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000102121 700__ $$aCharisiou, N.D.
000102121 700__ $$aDouvartzides, S.
000102121 700__ $$0(orcid)0000-0002-6873-5244$$aSebastian, V.$$uUniversidad de Zaragoza
000102121 700__ $$aHinder, S.J.
000102121 700__ $$aBaker, M.A.
000102121 700__ $$aAlKhoori, A.A.
000102121 700__ $$aAlKhoori, S.I.
000102121 700__ $$aPolychronopoulou, K.
000102121 700__ $$aGoula, M.A.
000102121 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000102121 773__ $$g11, 15 (2021), 8569-8584$$pRSC ADVANCES$$tRSC Advances$$x2046-2069
000102121 8564_ $$s2031522$$uhttps://zaguan.unizar.es/record/102121/files/texto_completo.pdf$$yVersión publicada
000102121 8564_ $$s2805746$$uhttps://zaguan.unizar.es/record/102121/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000102121 909CO $$ooai:zaguan.unizar.es:102121$$particulos$$pdriver
000102121 951__ $$a2023-05-18-13:47:03
000102121 980__ $$aARTICLE