Immobilization of dioxomolybdenum(VI) complex bearing salicylidene 2-picoloyl hydrazone on chloropropyl functionalized SBA-15: A highly active, selective and reusable catalyst in olefin epoxidation

Bagherzadeh, Mojtaba; Zare, Maryam; Salemnoush, Taghi; Özkâr, Saim; Akbayrak, Serdar

doi:10.1016/j.apcata.2014.01.020

Cited by 46 publications

(18 citation statements)

References 48 publications

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“…The stability of catalyst was examined by reusing the catalyst obtained from previous reaction with centrifugation. The catalyst was washed with ethanol, dried at vacuum and reused in the next run under the same conditions . As shown in Figure , Mo–MSN‐50 exhibited excellent reusability in the epoxidation of cyclooctene with 50 wt% H 2 O 2 as oxidant, and its conversion and selectivity remained almost the same after recycling 6 times.…”

Section: Resultsmentioning

confidence: 93%

“…Bagherzadeh et al. immobilized the molybdenum‐salicylidene 2‐picoloyl hydrazone complex with 3‐chloropropyl groups inside the pores of SBA‐15 to develop a novel molybdenum(VI) functionalized SBA‐15 as an organic‐inorganic hybrid catalyst in alkene epoxidation . Studying simple and efficient method to design molybdenum incorporated silica materials is also a useful topic at present.…”

Section: Introductionmentioning

confidence: 99%

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A General and Simple Method of Preparing Molybdenum‐ Incorporated Silica Nanoparticles as Potential Catalysts for Epoxidation of Alkenes

et al. 2018

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Molybdenum incorporated silica nanoparticles were synthesized by a general and simple method and developed as efficient catalysts for epoxidation of alkenes with high performance. The nanoparticles were prepared in mild conditions with cetyltrimethyl ammonium bromide as template, tetraethyl orthosilicate as silica source and triethanolamine as mineralizing agent. Molybdenum precursor was added during the sol‐gel process and transferred to active sites MoO3 after calcination. Remarkably, the shape of silica nanoparticles gradually changed from raspberry to rose with the rising dosage of molybdenum precursor. The materials were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N2 adsorption/desorption, inductively coupled plasma‐atom emission spectroscopy (ICP‐AES) and X‐ray photoelectron spectra (XPS). To determine the reactivity of catalysts, epoxidation of cyclooctene was carried out as a model reaction. After 12 h reaction with H2O2 (50 wt%), above 92% conversion and 95% selectivity were reached. Furthermore, the catalyst still had high conversion (74%) and selectivity (97%) for 4 h epoxidation of cyclooctene even after being recycled for 6 runs.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

A General and Simple Method of Preparing Molybdenum‐ Incorporated Silica Nanoparticles as Potential Catalysts for Epoxidation of Alkenes

et al. 2018

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“…Bagherzadeh et al observed a different mechanism on SBA‐15 supported MoO 2 catalysts. They synthesized a novel organic‐inorganic hybrid heterogeneous catalyst system from the reaction of Mo complex with mesoporous SBA‐15 containing 3‐chloropropyl groups.…”

Section: Mo‐based Catalystsmentioning

confidence: 97%

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Yan

Liu

Wang

et al. 2019

The Chemical Record

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Molybdenum complexes are versatile and efficient for liquid phase olefin epoxidation reactions. Rational design of catalysts is critical to achieve high atom efficiency during epoxidation processes. Although liquid phase epoxidation has been a popular topic for decades, three key issues, (a) rational control of morphology of molybdenum nanoparticles, (b) manipulating metal‐support interaction and (c) altering electronic configuration at molybdenum center remains unsolved in this area. Therefore, in this paper, we have critically revised recent research progress on heterogeneous molybdenum catalysts for facile liquid phase olefin epoxidation in terms of catalyst synthesis, surface characterization, catalytic performance and structure‐function relationship. Furthermore, plausible reaction mechanisms will be systematically discussed with the aim to provide insights into fundamental understanding on novel epoxidation chemistry.

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“…Na SBA-15 funcionalizada com 3-cloropropiltrimetóxisilano foram observados dois eventos: a eliminação da água fisissorvida em 144 °C e uma nova perda de massa em 300 °C atribuída a molécula orgânica ancorada na superfície do material relatados por [SOUNDIRESSANE et al, 2007], comprovando o sucesso de organofilização. No material [Ni(L1)]SBA-15, foram observados quatro eventos de decomposição: o primeiro em 167 °C atribuída a eliminação da água fisissorvida e solvente no material mesoporoso [BAGHERZADEH et al, 2014]. A decomposição da amina em 282 °C e 428ºC e a saída do ligante foi observada em 671°C [ANACONA et al, 2014].…”

Section: Análise Termogravimétrica (Tg/dtg)unclassified

Síntese, caracterização de complexos de Base de Schiff com níquel (II) ancorados no material mesoporoso SBA-15

Maia¹,

Araújo²,

Guedes³

et al. 2015

Anais Do 5º Encontro Regional De Química &Amp; 4º Encontro Nacional De Química

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Immobilization of dioxomolybdenum(VI) complex bearing salicylidene 2-picoloyl hydrazone on chloropropyl functionalized SBA-15: A highly active, selective and reusable catalyst in olefin epoxidation

Cited by 46 publications

References 48 publications

A General and Simple Method of Preparing Molybdenum‐ Incorporated Silica Nanoparticles as Potential Catalysts for Epoxidation of Alkenes

A General and Simple Method of Preparing Molybdenum‐ Incorporated Silica Nanoparticles as Potential Catalysts for Epoxidation of Alkenes

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

Síntese, caracterização de complexos de Base de Schiff com níquel (II) ancorados no material mesoporoso SBA-15

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