000061428 001__ 61428
000061428 005__ 20200221144142.0
000061428 0247_ $$2doi$$a10.1016/j.micromeso.2016.02.004
000061428 0248_ $$2sideral$$a93970
000061428 037__ $$aART-2016-93970
000061428 041__ $$aeng
000061428 100__ $$aAnizelli, P.R.
000061428 245__ $$aAdenine interaction with and adsorption on Fe-ZSM-5 zeolites: A prebiotic chemistry study using different techniques
000061428 260__ $$c2016
000061428 5060_ $$aAccess copy available to the general public$$fUnrestricted
000061428 5203_ $$aMost adsorption experiments are performed under conditions that did not exist on Earth before the life arose on it. Because adsorption is the first step for all other processes (protection against degradation and polymerization), it is important that it is performed under conditions that existed on prebiotic Earth. In this paper, we use an artificial seawater (seawater 4.0 Ga), which contains major cations and anions that could present on the oceans of the prebiotic Earth. In addition, zeolites, with substituted Fe in the framework, and adenine were probably common substances on the prebiotic Earth. Thus, study the interaction between them is an important issue in prebiotic chemistry. There are two main findings described in this paper. Firstly, zeolites with different Si/Fe ratios adsorbed adenine differently. Secondly, XAFS showed that, after treatments with seawater 4.0 Ga and adenine, an increase in the complexity of the system occurred. In general, salts of seawater 4.0 Ga did not affect the adsorption of adenine onto zeolites and adenine adsorbed less onto zeolites with iron isomorphically substituted. The C=C and NH2 groups of adenine interacted with the zeolites. Gypsum, formed from aqueous species dissolved in seawater 4.0 Ga, precipitated onto zeolites. EPR spectra of zeolites showed lines caused by Fe framework and Fe3+ species. TG curves of zeolites showed events caused by loss of water weakly bound to zeolite (in the 30-140 °C range), water bounded to iron species or cations from seawater 4.0 Ga or located in the cavities of zeolites (157-268 °C) and degradation of adenine adsorbed onto zeolites (360-600 °C). Mass loss follows almost the same order as the amount of adenine adsorbed onto zeolites. The XAFS spectrum showed that Fe3+ could be substituted into the framework of the Fe7-ZSM-5 zeolite.
000061428 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/RYC-2011-08550
000061428 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000061428 590__ $$a3.615$$b2016
000061428 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b57 / 275 = 0.207$$c2016$$dQ1$$eT1
000061428 591__ $$aCHEMISTRY, APPLIED$$b10 / 72 = 0.139$$c2016$$dQ1$$eT1
000061428 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b32 / 87 = 0.368$$c2016$$dQ2$$eT2
000061428 591__ $$aCHEMISTRY, PHYSICAL$$b43 / 145 = 0.297$$c2016$$dQ2$$eT1
000061428 592__ $$a1.093$$b2016
000061428 593__ $$aChemistry (miscellaneous)$$c2016$$dQ1
000061428 593__ $$aCondensed Matter Physics$$c2016$$dQ1
000061428 593__ $$aMaterials Science (miscellaneous)$$c2016$$dQ1
000061428 593__ $$aMechanics of Materials$$c2016$$dQ1
000061428 593__ $$aNanoscience and Nanotechnology$$c2016$$dQ2
000061428 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000061428 700__ $$aBaú, J.P.T.
000061428 700__ $$aValezi, D.F.
000061428 700__ $$aCanton, L.C.
000061428 700__ $$aCarneiro, C.E.A.
000061428 700__ $$aDi Mauro, E.
000061428 700__ $$aDa Costa, A.C.S.
000061428 700__ $$aGalante, D.
000061428 700__ $$aBraga, A.H.
000061428 700__ $$aRodrigues, F.
000061428 700__ $$0(orcid)0000-0003-1512-4500$$aCoronas, J.$$uUniversidad de Zaragoza
000061428 700__ $$aCasado-Coterillo, C.
000061428 700__ $$aZaia, C.T.B.V.
000061428 700__ $$aZaia, D.A.M.
000061428 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000061428 773__ $$g226 (2016), 493-504$$pMicroporous mesoporous mater.$$tMICROPOROUS AND MESOPOROUS MATERIALS$$x1387-1811
000061428 8564_ $$s1332540$$uhttps://zaguan.unizar.es/record/61428/files/texto_completo.pdf$$yPostprint
000061428 8564_ $$s76772$$uhttps://zaguan.unizar.es/record/61428/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000061428 909CO $$ooai:zaguan.unizar.es:61428$$particulos$$pdriver
000061428 951__ $$a2020-02-21-13:05:57
000061428 980__ $$aARTICLE