1 Ocak 2003 Dergi makalesi Açık Erişim

Boyaci, FG; Takac, S; Calik, G; Ozdamar, TH

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{
  "URL": "https://aperta.ulakbim.gov.tr/record/96471", 
  "abstract": "Reactor operation parameters for the liquid-phase acid-catalyzed decomposition of 2-isopropylnaphthalenehydroperoxide (2-IPNHP) were investigated to produce simultaneously 2-naphthol and acetone with a high yield. The 2-naphthol and acetone are produced from 2-IPNHP by ionic reactions, nevertheless, dimethyl-2-naphthylcarbinol (DMNC) and 2-acetonaphthone (AN) formations through radical reactions cannot be avoided because of the induced decomposition effects but can be decreased. The decomposition of 2-IPNHP was carried out in the presence of two different aprotic solvents of low dielectric (DE) constant, i.e. 2-isopropylnapthalene (IPN) and acetone (AC), and the protogenic solvent acetic acid (AcOH), with two different oxyacid catalysts, i.e. HClO4 and H2SO4. The production rate of 2-naphthol increases with the increase in the dipole moment (DM) of aprotic solvents. The increase in the initial 2-IPNHP concentration increases 2-IPNHP, decomposition and 2-naphthol production rates. 2-Naphthol production rate decreases and the radical by-product AN formation rate increases with increasing temperature. The presence of the impurities DMNC and AN of the reactant mixture and a radical scavenger in the decomposition reaction medium decreased the 2-naphthol production rate. A 70% yield of 2-naphthol was obtained in the presence of IPN by 0.047 mol dm(-3) HClO4 with the initial concentrations of 1.155 mol dm(-3) 2-IPNHP, 0.470 mol dm(-3) DMNC and 0.011 mol dm(-3) AN at T = 22degreesC and N = 1000 rpm. The reaction rate equations for the decomposition reaction of 2-IPNHP and production of 2-naphthol are also presented. (C) 2002 Elsevier Science B.V. All rights reserved.", 
  "author": [
    {
      "family": "Boyaci", 
      "given": " FG"
    }, 
    {
      "family": "Takac", 
      "given": " S"
    }, 
    {
      "family": "Calik", 
      "given": " G"
    }, 
    {
      "family": "Ozdamar", 
      "given": " TH"
    }
  ], 
  "container_title": "APPLIED CATALYSIS A-GENERAL", 
  "id": "96471", 
  "issue": "1", 
  "issued": {
    "date-parts": [
      [
        2003, 
        1, 
        1
      ]
    ]
  }, 
  "page": "85-97", 
  "title": "Decomposition of 2-isopropylnaphthalenehydroperoxide into 2-naphthol and acetone: reactor operation parameters", 
  "type": "article-journal", 
  "volume": "238"
}