1 Ocak 2018 Dergi makalesi Açık Erişim

Gulec, Fatih; Ozen, Aysun; Niftaliyeva, Aysel; Aydiin, Ayse; Simsek, Emir Huseyin; Karaduman, Ali

MARC21 XML

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">A kinetic study on methylation of naphthalene over Fe/ZSM-5 zeolite catalysts</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="p">RESEARCH ON CHEMICAL INTERMEDIATES</subfield>
    <subfield code="v">44</subfield>
    <subfield code="n">1</subfield>
    <subfield code="c">55-67</subfield>
  </datafield>
  <controlfield tag="001">32527</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-tubitak-destekli-proje-yayinlari</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">2,6-Dimethylnaphthalene is an important dimethylnaphthalene isomer which can be used in the production of polyethylene naphthalate. The novelty of this study is to reveal Langmuir-Hinshelwood and Eley-Rideal reaction rate equations for the methylation of naphthalene over Fe/ZSM-5 zeolite catalysts besides the proposed reaction rate equation. To investigate the kinetics and mechanisms of naphthalene methylation, the methylation experiments were carried out in a gas-solid catalytic fixed-bed reactor in the presence of Fe/ZSM-5 zeolite catalysts at two different temperatures (450 and 500 degrees C) and five different weight hourly space velocities (0.5, 1.0, 1.5, 2.0, 2.5, 3.0 h(-1)). A naphthalene:methanol:1,2,4-trimethyl benzene mixture having a 1:3:10 molar ratio was used as a feed stream. The methylation products were identified by using GC-MS. For the methylation kinetics of naphthalene, the reaction rates depending on the naphthalene and methanol concentration were determined. Furthermore, the effects of temperature and weight hourly space velocity on the conversion of naphthalene, the selectivity of 2,6-dimethylnaphthalene, and the ratio of 2-methylnaphthalene/1-methylnaphthalene were determined. The results of this study demonstrate that the Langmuir-Hinshelwood reaction mechanism for naphthalene methylation is more compatible at 450 degrees C and the Eley-Rideal reaction mechanism at 500 degrees C. Moreover, in addition to 2,6-dimethylnaphthalene, other dimethylnaphthalene and tri-methylnaphthalene isomers were formed in the methylation of naphthalene. The conversion of naphthalene reached approximately 70%. Moreover, the highest selectivity of 2,6-dimethylnaphthalene was almost 40%. The ratios of 2-methylnaphthalene/1-methylnaphalene demonstrate that the methylation of naphthalene to 2-methynaphthalene is much higher than to 1-methynaphthalene.</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="2">opendefinition.org</subfield>
    <subfield code="a">cc-by</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Ankara Univ, Fac Engn, TR-06100 Ankara, Turkey</subfield>
    <subfield code="a">Ozen, Aysun</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Selcuk Univ, Fac Engn, TR-42030 Konya, Turkey</subfield>
    <subfield code="a">Niftaliyeva, Aysel</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Ankara Univ, Fac Engn, TR-06100 Ankara, Turkey</subfield>
    <subfield code="a">Aydiin, Ayse</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Ankara Univ, Fac Engn, TR-06100 Ankara, Turkey</subfield>
    <subfield code="a">Simsek, Emir Huseyin</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Ankara Univ, Fac Engn, TR-06100 Ankara, Turkey</subfield>
    <subfield code="a">Karaduman, Ali</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="b">article</subfield>
    <subfield code="a">publication</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="u">Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England</subfield>
    <subfield code="a">Gulec, Fatih</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2018-01-01</subfield>
  </datafield>
  <controlfield tag="005">20210315184257.0</controlfield>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="o">oai:zenodo.org:32527</subfield>
    <subfield code="p">user-tubitak-destekli-proje-yayinlari</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="z">md5:ea4e344db5317aad88a24e8dd635fe38</subfield>
    <subfield code="s">213</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/32527/files/bib-4f24fd7c-cd89-4d6c-b5c4-4e3b46ea90a5.txt</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield>
    <subfield code="a">Creative Commons Attribution</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1007/s11164-017-3090-5</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
</record>