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<span lang="EN-GB">Solvent-free facile synthesis of di-octyl phthalate over heterogeneous sulfated zirconia acid catalyst</span>

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Title Statement <span lang="EN-GB">Solvent-free facile synthesis of di-octyl phthalate over heterogeneous sulfated zirconia acid catalyst</span>
 
Added Entry - Uncontrolled Name Parmar, Ajay M; Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), GB Marg, Bhavnagar 364 002, India
Saravanan, K ; Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), GB Marg, Bhavnagar 364 002, India
Tyagi, Beena ; Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), GB Marg, Bhavnagar 364 002, India
Srinivasan, Kannan ; Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), GB Marg, Bhavnagar 364 002, India
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Uncontrolled Index Term Heterogeneous acid catalysis
Heterogeneous catalysts, Acid catalysts, Esterification, Sulfated zirconia, Di-octyl phthalate, Phthalic acid
 
Summary, etc. <span lang="EN-GB">The present study reports the synthesis of di-octyl phthalate (DOP), widely used as a plasticizer, via solvent-free esterification of phthalic acid and <em>n</em>-octanol over sulfated zirconia (SZr) heterogeneous acid catalyst. A comparison with other heterogeneous acid catalysts such as K-10 acid activated clay, zeolites (β and Y), Amberlyst-15 resin shows the superior activity of SZr, exhibiting maximum conversion of <em>n</em>-octanol (88%) with 93% DOP selectivity at 160 °C in 6 h. The rate of the reaction for SZr catalyst is computed as 17.3 mmol h<sup>−1</sup> g<sup>−1</sup>. The catalyst activity is stable upon recycling for up to five cycles. The weak acid sites of the catalyst are postulated as the responsible active centres involved in the reaction. The reaction has been successfully scaled up over twenty five times; and </span><span lang="EN-GB">the product DOP (67 g, 99% by GC) isolated and characterized by FT-IR and <sup>1</sup>H NMR spectroscopy. </span><span lang="EN-GB">It is noteworthy that the activity of SZr catalyst is comparable with that of H<sub>2</sub>SO<sub>4</sub> and <em>p</em>-toluene sulphonic acid (<em>p</em>-TSA), which clearly </span><span lang="EN-GB">suggets </span><span lang="EN-GB">its potential as an efficient alternative to conventional commercial homogeneous acid catalysts for the synthesis of DOP.</span>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-12-10 10:59:09
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCA/article/view/17245
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 56, ##issue.no## 7 (2017): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/17245/51642
http://op.niscair.res.in/index.php/IJCA/article/download/17245/51643
http://op.niscair.res.in/index.php/IJCA/article/download/17245/51644
http://op.niscair.res.in/index.php/IJCA/article/download/17245/51645
http://op.niscair.res.in/index.php/IJCA/article/download/17245/51646
 
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