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      Caracterização e propriedades catalíticas da zeolita HZSM5 modificada com nióbio Translated title: Characterization and catalytical properties of hzsm5 zeolite modified by niobium

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          Translated abstract

          HZSM5 zeolite was modified by exchanging proton by niobium (V). Several samples were obtained with various degrees of exchange. Pore volumes and acidity were measured to characterize these exchanged zeolites. Catalytic properties were evaluated with two reaction tests: m-xylene transformation and n-heptane cracking. The introduction of niobium on HZSM5 zeolite decreases the diffusion coefficient of 2-methyl-pentane and increases the zeolite acidity. The sample containing niobium are initially more active in cracking of n-heptane and m-xylene isomerization than HZSM5 alone.

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          Most cited references15

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          Zeolite Molecular Sieves

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            Catal. Today

            K Tanabe (1990)
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              Studies in Surface Sciences and Catalysis

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                qn
                Química Nova
                Quím. Nova
                Sociedade Brasileira de Química (São Paulo )
                1678-7064
                February 1997
                : 20
                : 1
                : 9-13
                Affiliations
                [1 ] Universidade Estadual Paulista Brazil
                [2 ] URA CNRS 350 Catalyse en Chimie Organique France
                Article
                S0100-40421997000100003
                10.1590/S0100-40421997000100003
                480c7f66-c8c5-43a0-a045-dc94a6726475

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-4042&lng=en
                Categories
                CHEMISTRY, MULTIDISCIPLINARY

                General chemistry
                HZSM5 zeolite,niobium exchange,pore volume,acidity
                General chemistry
                HZSM5 zeolite, niobium exchange, pore volume, acidity

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