SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 55 ›› Issue (3): 257-265.DOI: 10.1016/j.cjche.2022.04.025

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Mesoporous titanium-aluminosilicate as an efficient catalyst for selective oxidation of cyclohexene at mild reaction conditions

Jitendra Diwakar, Selvamani Arumugam, Bhavna Saini, Anup Prakash Tathod, Nagabhatla Viswanadham   

  1. 1. Academy of Scientific and Innovative Research (AcSIR), at CSIR-Indian Institute of Petroleum, Dehradun 248005, India;
    2. Light Stock Processing Division, Council of Scientific & Industrial Research-Indian Institute of Petroleum, Council of Scientific and Industrial Research, Dehradun 248005, India
  • Received:2021-11-02 Revised:2022-04-25 Online:2023-06-03 Published:2023-03-28
  • Contact: Selvamani Arumugam,E-mail:a.selvamani@iip.res.in;Nagabhatla Viswanadham,E-mail:nvish@iip.res.in
  • Supported by:
    The authors are thankful to the Director, CSIR-IIP for his encouragement and providing lab facilities, the CSIR, Delhi for awarding CSIR-SRF fellowship and the IIP analytical division for analytical supports.

Mesoporous titanium-aluminosilicate as an efficient catalyst for selective oxidation of cyclohexene at mild reaction conditions

Jitendra Diwakar, Selvamani Arumugam, Bhavna Saini, Anup Prakash Tathod, Nagabhatla Viswanadham   

  1. 1. Academy of Scientific and Innovative Research (AcSIR), at CSIR-Indian Institute of Petroleum, Dehradun 248005, India;
    2. Light Stock Processing Division, Council of Scientific & Industrial Research-Indian Institute of Petroleum, Council of Scientific and Industrial Research, Dehradun 248005, India
  • 通讯作者: Selvamani Arumugam,E-mail:a.selvamani@iip.res.in;Nagabhatla Viswanadham,E-mail:nvish@iip.res.in
  • 基金资助:
    The authors are thankful to the Director, CSIR-IIP for his encouragement and providing lab facilities, the CSIR, Delhi for awarding CSIR-SRF fellowship and the IIP analytical division for analytical supports.

Abstract: Mesoporous titanium containing alumino-silicate materials with various titanium/silicon (Ti/Si) ratio (AlSi-Ti(n); n = Ti/Si mole ratio) have been successfully synthesized by a novel single-step sodium (Na)-free method, for the first time. The obtained characterization results of the prepared materials reveal that in-situ addition of Ti into AlSi shows ordered mesoporous structure along with uniformly dispersed Ti species in +4 and +3 oxidation states suitable for selective oxidation of allylic C—H bond. The prepared mesoporouse Ti-AlSi(n) samples exhibited excellent activity in the oxidation of cyclohexene with 100% conversion and 100% selectivity to ketone-alcohol (KA) oil (cyclohex-2-en-1-ol and 2-cyclohexen-1-one) at low temperature and reaction time (35 ℃ and 30 min reaction time). This study suggests that AlSi-Ti(0.05) material can be a promising catalyst for the selective oxidation of cyclohexene under mild reaction conditions.

Key words: Cyclohexene, Allylic oxidation, KA oil, Mesoporous AlSi, Mild conditions

摘要: Mesoporous titanium containing alumino-silicate materials with various titanium/silicon (Ti/Si) ratio (AlSi-Ti(n); n = Ti/Si mole ratio) have been successfully synthesized by a novel single-step sodium (Na)-free method, for the first time. The obtained characterization results of the prepared materials reveal that in-situ addition of Ti into AlSi shows ordered mesoporous structure along with uniformly dispersed Ti species in +4 and +3 oxidation states suitable for selective oxidation of allylic C—H bond. The prepared mesoporouse Ti-AlSi(n) samples exhibited excellent activity in the oxidation of cyclohexene with 100% conversion and 100% selectivity to ketone-alcohol (KA) oil (cyclohex-2-en-1-ol and 2-cyclohexen-1-one) at low temperature and reaction time (35 ℃ and 30 min reaction time). This study suggests that AlSi-Ti(0.05) material can be a promising catalyst for the selective oxidation of cyclohexene under mild reaction conditions.

关键词: Cyclohexene, Allylic oxidation, KA oil, Mesoporous AlSi, Mild conditions