<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-05-30T01:48:55Z</responseDate><request verb="GetRecord" identifier="oai:riuma.uma.es:10630/30511" metadataPrefix="marc">https://riuma.uma.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:riuma.uma.es:10630/30511</identifier><datestamp>2026-02-03T11:21:29Z</datestamp><setSpec>com_10630_2254</setSpec><setSpec>col_10630_37953</setSpec></header><metadata><record xmlns="http://www.loc.gov/MARC21/slim" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
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      <subfield code="a">Guerrero-Pérez, María Olga</subfield>
      <subfield code="e">author</subfield>
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      <subfield code="c">2019-04-20</subfield>
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      <subfield code="a">Niobium is a very important element in catalysis, active component of many catalytic systems. But it is not only a major component in many catalytic systems; in addition, it is usually used as a key promoter, because it has a rich complex chemistry and is able to react with many elements forming a wide range of compounds and oxide phases with complex structures. Thus, present contribution makes a brief review on the main industrial catalytic processes in with niobioum have been used as a promoting agent during the last decade. The uses of niobium as main component in the catalytic formulations have not been considered.</subfield>
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   <datafield ind1="8" ind2=" " tag="024">
      <subfield code="a">Guerrero-Pérez, M. O. (2020). The fascinating effect of niobium as catalytic promoting agent. Catalysis Today, 354, 19–25.</subfield>
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      <subfield code="a">https://hdl.handle.net/10630/30511</subfield>
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      <subfield code="a">10.1016/j.cattod.2019.04.008</subfield>
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      <subfield code="a">Niobio</subfield>
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      <subfield code="a">Catálisis</subfield>
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      <subfield code="a">The fascinating effect of niobium as catalytic promoting agent.</subfield>
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