1
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Hatshan M, Khan M, Assal ME, Shaik MR, Kuniyil M, Al-warthan A, Siddiqui MRH, Adil SF. Green, Solvent-Free Mechanochemical Synthesis of Nano Ag 2O/MnO 2/N-Doped Graphene Nanocomposites: An Efficient Catalyst for Additive-Base-Free Aerial Oxidation of Various Kinds of Alcohols. ACS OMEGA 2024; 9:2770-2782. [PMID: 38250433 PMCID: PMC10795140 DOI: 10.1021/acsomega.3c07865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024]
Abstract
Herein, we report a solvent-less, straightforward, and facile mechanochemical technique to synthesize nanocomposites of Ag2O nanoparticles-doped MnO2, which is further codoped with nitrogen-doped graphene (N-DG) [i.e., (X %)N-DG/MnO2-(1% Ag2O)] using physical milling of separately prepared N-DG and Ag2O NPs-MnO2 annealed at 400 °C over an eco-friendly ball-mill process. To assess the efficiency in terms of catalytic performance of the nanocomposites, selective oxidation of benzyl alcohol (BlOH) to benzaldehyde (BlCHO) is selected as a substrate model with an eco-friendly oxidizing agent (O2 molecule) and without any requirements for the addition of any harmful additives or bases. Various nanocomposites were prepared by varying the amount of N-DG in the composite, and the results obtained highlighted the function of N-DG in the catalyst system when they are compared with the catalyst MnO2-(1% Ag2O) [i.e., undoped catalyst] and MnO2-(1% Ag2O) codoped with different graphene dopants such as GRO and H-RG for alcohol oxidation transformation. The effects of various catalytic factors are systematically evaluated to optimize reaction conditions. The N-DG/MnO2-(1% Ag2O) catalyst exhibits premium specific activity (16.0 mmol/h/g) with 100% BlOH conversion and <99.9% BlCHO selectivity within a very short interval. The mechanochemically prepared N-DG-based nanocomposite displayed higher catalytic efficacy than that of the MnO2-(1% Ag2O) catalyst without the graphene dopant, which is N-DG in this study. A wide array of aromatic, heterocyclic, allylic, primary, secondary, and aliphatic alcohols have been selectively converted to respective ketones and aldehydes with full convertibility without further oxidation to acids over N-DG/MnO2-(1% Ag2O). Interestingly, it is also found that the N-DG/MnO2-(1% Ag2O) can be efficiently reused up to six times without a noteworthy decline in its effectiveness. The prepared nanocomposites were characterized using various analytical, microscopic, and spectroscopic techniques such as X-ray diffraction, thermogravimetric analysis, Fourier-transform infrared spectroscopy, Raman, field emission scanning electron microscopy, and Brunauer-Emmett-Teller.
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Affiliation(s)
- Mohammad
Rafe Hatshan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mujeeb Khan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohamed E. Assal
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammed Rafi Shaik
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mufsir Kuniyil
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman Al-warthan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | | | - Syed Farooq Adil
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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2
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Kalita B, Iraqui S, Borgohain X, Rashid MH. Ultrasonic irradiation-assisted MnFe 2O 4 nanoparticles catalyzed solvent-free selective oxidation of benzyl alcohol to benzaldehyde at room temperature. RSC Adv 2023; 13:30855-30868. [PMID: 37869381 PMCID: PMC10587744 DOI: 10.1039/d3ra03797e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/13/2023] [Indexed: 10/24/2023] Open
Abstract
Magnetic nanoparticles (NPs) play a vital role in heterogeneous catalysis because of their easy separation, and effective recyclability. Herein, we report the synthesis of MnFe2O4 NPs for use as catalysts in the selective oxidation of benzyl alcohol to benzaldehyde under mild conditions. The MnFe2O4 NPs have been synthesized by precipitation method followed by hydrothermal ageing at 180 °C for 4.0 h. We have investigated the effect of chitosan and carboxymethyl cellulose on the size or morphology of the formed MnFe2O4 NPs. The X-ray diffraction study confirms the formation of pure and crystalline MnFe2O4 with varying average crystallite sizes ranging from 18 to 28 nm based on the type of additive used. The electron microscopy study reveals that the additive plays a significant role in controlling the morphology of the formed MnFe2O4 NPs. These MnFe2O4 NPs exhibit superparamagnetic behaviour at room temperature and can effectively catalyze the solvent-free selective oxidation of benzyl alcohol to benzaldehyde in the presence of tert-butyl hydroperoxide at room temperature under ultrasonic irradiation. The developed protocol can be extended to various substituted benzyl alcohols having both the electron withdrawing and electron donating groups to afford moderate to excellent yield of the products. The catalyst is magnetically retrievable, highly stable, and can be reused up to the sixth run without significant loss of catalytic activity.
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Affiliation(s)
- Babul Kalita
- Department of Chemistry, Rajiv Gandhi University Rono Hills, Doimukh 791 112 Arunachal Pradesh India
| | - Saddam Iraqui
- Department of Chemistry, Rajiv Gandhi University Rono Hills, Doimukh 791 112 Arunachal Pradesh India
| | - Xavy Borgohain
- Department of Chemistry, Rajiv Gandhi University Rono Hills, Doimukh 791 112 Arunachal Pradesh India
| | - Md Harunar Rashid
- Department of Chemistry, Rajiv Gandhi University Rono Hills, Doimukh 791 112 Arunachal Pradesh India
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3
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Das V, Hussain F. Hepta‐nuclear Zinc Tungstophosphate Nano‐cluster [Zn
7
(H
2
O)
2
(OH)
2
P
2
W
25
O
94
]
16−
: Synthesis, Characterization and its Catalytic Application in Alcohol Oxidation. ChemistrySelect 2023. [DOI: 10.1002/slct.202204001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Vivek Das
- Department of Chemistry University of Delhi Faculty of Science North Campus Delhi 110007 India
| | - Firasat Hussain
- Department of Chemistry University of Delhi Faculty of Science North Campus Delhi 110007 India
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4
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Anti‐corrosive additives for alkaline electrolyte in Al‐air batteries: NH
4
VO
3
and polyoxometalates. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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5
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Iraqui S, Kashyap SS, Rashid MH. NiFe 2O 4 nanoparticles: an efficient and reusable catalyst for the selective oxidation of benzyl alcohol to benzaldehyde under mild conditions. NANOSCALE ADVANCES 2020; 2:5790-5802. [PMID: 36133875 PMCID: PMC9417505 DOI: 10.1039/d0na00591f] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/09/2020] [Indexed: 05/04/2023]
Abstract
Benzaldehyde is one of the most important and versatile organic chemicals for industrial applications. This study explores a milder approach for the fabrication of NiFe2O4 nanoparticles (NPs) for use as a catalyst in the selective oxidation of benzyl alcohol to benzaldehyde. A co-precipitation method coupled with hydrothermal aging has been adopted to synthesize NiFe2O4 NPs in the absence of any additive. Different techniques such as electron microscopy, diffractometry, and photoelectron spectroscopy have been used to characterize the products. The results showed that the synthesized NiFe2O4 NPs are spherical, pure, and highly crystalline with sizes below 12 nm possessing superparamagnetic behaviour. The catalytic activity of the synthesized NiFe2O4 NPs has been assessed in the selective oxidation of benzyl alcohol under ambient reaction conditions. A conversion of 85% benzyl alcohol with 100% selectivity has been attained with t-butyl hydroperoxide at 60 °C in 3 h. With the optimized reaction conditions, the generality of the newly developed protocol has been expanded to a wide array of substituted benzyl alcohols with good performance. The NiFe2O4 nanocatalysts are magnetically separable and are reusable up to five cycles without loss of catalytic activity.
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Affiliation(s)
- Saddam Iraqui
- Department of Chemistry, Rajiv Gandhi University Rono Hills Doimukh 791 112 Arunachal Pradesh India
| | | | - Md Harunar Rashid
- Department of Chemistry, Rajiv Gandhi University Rono Hills Doimukh 791 112 Arunachal Pradesh India
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6
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Frija LM, Fernandes AL, Cristiano MLS, Pombeiro AJ. Solvent-free oxidation of benzyl alcohols catalysed by a tetrazole-saccharinate Zn(II) complex under microwave radiation: The role of the ligand and the reaction mechanism. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128831] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Eco-Friendly and Solvent-Less Mechanochemical Synthesis of ZrO2–MnCO3/N-Doped Graphene Nanocomposites: A Highly Efficacious Catalyst for Base-Free Aerobic Oxidation of Various Types of Alcohols. Catalysts 2020. [DOI: 10.3390/catal10101136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
In recent years, the development of green mechanochemical processes for the synthesis of new catalysts with higher catalytic efficacy and selectivity has received manifest interest. In continuation of our previous study, in which graphene oxide (GRO) and highly reduced graphene oxide (HRG) based nanocomposites were prepared and assessed, herein, we have explored a facile and solvent-less mechanochemical approach for the synthesis of N-doped graphene (NDG)/mixed metal oxide (MnCO3–ZrO2) ((X%)NDG/MnCO3–ZrO2), as the (X%)NDG/MnCO3–ZrO2 nano-composite was synthesized using physical grinding of separately synthesized NDG and pre-calcined (300 °C) MnCO3–ZrO2 via green milling method. The structures of the prepared materials were characterized in detail using X-ray powder diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-Ray Analysis (EDX), Fourier-transform infrared spectroscopy (FTIR), Raman, Thermogravimetric analysis (TGA), and N2 adsorption-desorption isotherm analysis. Besides, the obtained nanocomposites were employed as heterogeneous oxidation catalyst for the alcohol oxidation using green oxidant O2 without involving any surfactants or bases. The reaction factors were systematically studied during the oxidation of benzyl alcohol (PhCH2OH) as the model reactant to benzaldehyde (PhCHO). The NDG/MnCO3–ZrO2 exhibits premium specific activity (66.7 mmol·g−1·h−1) with 100% conversion of PhCH2OH and > 99.9% selectivity to PhCHO after only 6 min. The mechanochemically prepared NDG based nanocomposite exhibited notable improvement in the catalytic efficacy as well as the surface area compared to the pristine MnCO3–ZrO2. Under the optimal circumstances, the NDG/MnCO3–ZrO2 catalyst could selectively catalyze the aerobic oxidation of a broad array of alcohols to carbonyls with full convertibility without over-oxidized side products like acids. The NDG/MnCO3–ZrO2 catalyst were efficiently reused for six subsequent recycling reactions with a marginal decline in performance and selectivity.
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8
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Adil SF, Assal ME, Shaik MR, Kuniyil M, Hashmi A, Khan M, Khan A, Tahir MN, Al‐Warthan A, Siddiqui MRH. Efficient aerial oxidation of different types of alcohols using ZnO nanoparticle–MnCO
3
‐graphene oxide composites. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5718] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Syed Farooq Adil
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mohamed E. Assal
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mohammed Rafi Shaik
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mufsir Kuniyil
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Azhar Hashmi
- SABIC Technology and Innovation Riyadh Kingdom of Saudi Arabia
| | - Mujeeb Khan
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Aslam Khan
- King Abdullah Institute for Nanotechnology King Saud University Riyadh 11451 Kingdom of Saudi Arabia
| | - Muhammad Nawaz Tahir
- Chemistry Department King Fahd University of Petroleum and Minerals Dhahran 31261 Kingdom of Saudi Arabia
| | - Abdulrahman Al‐Warthan
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mohammed Rafiq H. Siddiqui
- Chemistry Department, College of Science King Saud University P.O. 2455 Riyadh 11451 Kingdom of Saudi Arabia
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9
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Hydrogen Peroxide as a Green Oxidant for the Selective Catalytic Oxidation of Benzylic and Heterocyclic Alcohols in Different Media: An Overview. CHEMISTRY 2020. [DOI: 10.3390/chemistry2010010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Among a plethora of known and established oxidant in organic chemistry, hydrogen peroxide stands in a special position. It is commercially and inexpensively available, highly effective, selective, and more importantly it is compatible with current environmental concerns, dictated by principles of green chemistry. Several chemicals or their intermediates that are important in our daily life such as pharmaceuticals, flavors, fragrances, etc. are products of oxidation of alcohols. In this review, we introduce hydrogen peroxide as an effective, selective, green and privileged oxidant for the catalyzed oxidation of primary and secondary benzylic and heterocyclic alcohols to corresponding carbonyl compounds in different media such as aqueous media, under solvent-free conditions, various organic solvent, and dual-phase system.
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10
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Eco-Friendly Mechanochemical Preparation of Ag2O–MnO2/Graphene Oxide Nanocomposite: An Efficient and Reusable Catalyst for the Base-Free, Aerial Oxidation of Alcohols. Catalysts 2020. [DOI: 10.3390/catal10030281] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Recently, the development of eco-friendly mechanochemical approaches for the preparation of novel catalysts with enhanced activity and selectivity has gained considerable attention. Herein, we developed a rapid and solvent-less mechanochemical method for the preparation of mixed metal oxide (Ag2O–MnO2) decorated graphene oxide (GRO)-based nanocomposites (Ag2O–MnO2/(X wt.%)GRO), as the Ag2O–MnO2/(X wt.%)GRO nanocomposite was fabricated by the physical grinding of freshly prepared GRO and pre-annealed (300 °C) mixed metal oxide nanoparticles (NPs) (Ag2O–MnO2) using an eco-friendly milling procedure. The as-prepared nanocatalysts were characterized by using various techniques. Furthermore, the nanocomposites were applied as a heterogeneous catalyst for the oxidation of alcohol by employing gaseous O2 as an eco-friendly oxidant under base-free conditions. The mechanochemically obtained GRO-based composite exhibited noticeable enhancement in the surface area and catalytic performance compared to the pristine Ag2O–MnO2. The results revealed that (1%)Ag2O–MnO2/(5 wt.%)GRO catalyst exhibited higher specific performance (13.3 mmol·g−1·h−1) with a 100% conversion of benzyl alcohol (BnOH) and >99% selectivity towards benzaldehyde (BnH) within 30 min. The enhancement of the activity and selectivity of GRO-based nanocatalyst was attributed to the presence of various oxygen-containing functional groups, a large number of defects, and a high specific surface area of GRO. In addition, the as-prepared nanocatalyst also demonstrated excellent catalytic activity towards the conversion of a variety of other alcohols to respective carbonyls under optimal conditions. Besides, the catalyst ((1%)Ag2O–MnO2/(5 wt.%)GRO) could be efficiently recycled six times with no noticeable loss in its performance and selectivity.
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11
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Jin M, Niu Q, Guo Z, Lv Z. Epoxidation of cyclohexene with H
2
O
2
over efficient water‐tolerant heterogeneous catalysts composed of mono‐substituted phosphotungstic acid on co‐functionalized SBA‐15. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Manman Jin
- State Key Laboratory Base for Eco‐chemical Engineering, College of Chemical EngineeringQingdao University of Science and Technology No. 53 Zhengzhou Road Qingdao 266042 China
- Department of Chemistry and Chemical EngineeringJining University Qufu Shandong 273155 China
| | - Qingtao Niu
- Department of Chemistry and Chemical EngineeringJining University Qufu Shandong 273155 China
| | - Zhenmei Guo
- College of Marine Science and Biological EngineeringQingdao University of Science and Technology No.53 Zhengzhou Road Qingdao 266042 China
| | - Zhiguo Lv
- State Key Laboratory Base for Eco‐chemical Engineering, College of Chemical EngineeringQingdao University of Science and Technology No. 53 Zhengzhou Road Qingdao 266042 China
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12
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Assal ME, Shaik MR, Kuniyil M, Khan M, Al-Warthan A, Alharthi AI, Varala R, Siddiqui MRH, Adil SF. Ag2O nanoparticles/MnCO3, –MnO2 or –Mn2O3/highly reduced graphene oxide composites as an efficient and recyclable oxidation catalyst. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2018.03.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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13
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Mixed Zinc/Manganese on Highly Reduced Graphene Oxide: A Highly Active Nanocomposite Catalyst for Aerial Oxidation of Benzylic Alcohols. Catalysts 2017. [DOI: 10.3390/catal7120391] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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14
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Ramazani A, Khoobi M, Sadri F, Tarasi R, Shafiee A, Aghahosseini H, Joo SW. Efficient and selective oxidation of alcohols in water employing palladium supported nanomagnetic Fe3
O4
@hyperbranched polyethylenimine (Fe3
O4
@HPEI.Pd) as a new organic-inorganic hybrid nanocatalyst. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3908] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ali Ramazani
- Department of Chemistry; University of Zanjan; P.O. Box 45195-313 Zanjan Iran
| | - Mehdi Khoobi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran 14176 Iran
- Medical Biomaterials Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Fariba Sadri
- Department of Chemistry; Payame Noor University; P.O. Box 19395-3697 Tehran Iran
| | - Roghayeh Tarasi
- Department of Chemistry; University of Zanjan; P.O. Box 45195-313 Zanjan Iran
| | - Abbas Shafiee
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran 14176 Iran
| | | | - Sang Woo Joo
- School of Mechanical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
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15
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Assal ME, Kuniyil M, Khan M, Al-Warthan A, Siddiqui MRH, Tremel W, Nawaz Tahir M, Adil SF. Synthesis and Comparative Catalytic Study of Zirconia-MnCO 3 or -Mn 2O 3 for the Oxidation of Benzylic Alcohols. Chemistry 2017; 6:112-120. [PMID: 28168156 PMCID: PMC5288761 DOI: 10.1002/open.201600116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Indexed: 11/06/2022]
Abstract
We report on the synthesis of the zirconia-manganese carbonate ZrOx(x %)-MnCO3 catalyst (where x=1-7) that, upon calcination at 500 °C, is converted to zirconia-manganese oxide ZrOx(x %)-Mn2O3 . We also present a comparative study of the catalytic performance of the both catalysts for the oxidation of benzylic alcohol to corresponding aldehydes by using molecular oxygen as the oxidizing agent. ZrOx(x %)-MnCO3 was prepared through co-precipitation by varying the amounts of Zr(NO3)4 (w/w %) in Mn(NO3)2. The morphology, composition, and crystallinity of the as-synthesized product and the catalysts prepared upon calcination were studied by using scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and powder X-ray diffraction. The surface areas of the catalysts [133.58 m2 g-1 for ZrOx(1 %)-MnCO3 and 17.48 m2 g-1 for ZrOx(1 %)-Mn2O3 ] were determined by using the Brunauer-Emmett-Teller method, and the thermal stability was assessed by using thermal gravimetric analysis. The catalyst with composition ZrOx(1 %)-MnCO3 pre-calcined at 300 °C exhibited excellent specific activity (48.00 mmolg-1 h-1) with complete conversion within approximately 5 min and catalyst cyclability up to six times without any significant loss in activity. The specific activity, turnover number and turnover frequency achieved is the highest so far (to the best of our knowledge) compared to the previously reported catalysts used for the oxidation of benzyl alcohol. The catalyst showed selectivity for aromatic alcohols over aliphatic alcohols.
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Affiliation(s)
- Mohamed E Assal
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mufsir Kuniyil
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mujeeb Khan
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Abdulrahman Al-Warthan
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Mohammed Rafiq H Siddiqui
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
| | - Wolfgang Tremel
- Institute of Inorganic and Analytical Chemistry Johannes Gutenberg-University of Mainz 55128 Mainz Germany
| | - Muhammad Nawaz Tahir
- Institute of Inorganic and Analytical Chemistry Johannes Gutenberg-University of Mainz 55128 Mainz Germany
| | - Syed Farooq Adil
- Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
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16
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Vessally E, Hosseinzadeh-Khanmiri R, Ghorbani-Kalhor E, Es'haghi M, Ejlali L. Eco-friendly synthesis of 3,4-dihydroquinoxalin-2-amine, diazepine-tetrazole and benzodiazepine-2-carboxamide derivatives with the aid of MCM-48/H5
PW10
V2
O40. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3729] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Esmail Vessally
- Department of Chemistry; Payame Noor University; Tehran Iran
| | - Rahim Hosseinzadeh-Khanmiri
- Department of Chemistry; Payame Noor University; Tehran Iran
- Department of Chemistry, Tabriz Branch; Islamic Azad University; Tabriz Iran
| | | | - Moosa Es'haghi
- Department of Chemistry, Tabriz Branch; Islamic Azad University; Tabriz Iran
| | - Ladan Ejlali
- Department of Chemistry, Tabriz Branch; Islamic Azad University; Tabriz Iran
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17
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Assal ME, Shaik MR, Kuniyil M, Khan M, Al-Warthan A, Siddiqui MRH, Khan SMA, Tremel W, Tahir MN, Adil SF. A highly reduced graphene oxide/ZrOx–MnCO3 or –Mn2O3 nanocomposite as an efficient catalyst for selective aerial oxidation of benzylic alcohols. RSC Adv 2017. [DOI: 10.1039/c7ra11569e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZrOx(1%)–MnCO3/HRG(1%) based nanocomposites material as an efficient oxidation catalyst.
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Affiliation(s)
- Mohamed E. Assal
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mohammed Rafi Shaik
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mufsir Kuniyil
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mujeeb Khan
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Abdulrahman Al-Warthan
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | | | - Sohail M. A. Khan
- Department of Mechanical and Industrial Engineering
- Ryerson University
- Toronto
- Canada
| | - Wolfgang Tremel
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg-University of Mainz
- Germany
| | - Muhammad Nawaz Tahir
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg-University of Mainz
- Germany
- Chemistry Department
- King Fahd University of Petroleum and Materials
| | - Syed Farooq Adil
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
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18
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Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO3, –MnO2, and –Mn2O3 Nanocomposites for Aerial Oxidation of Alcohols. J CHEM-NY 2017. [DOI: 10.1155/2017/2937108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Zinc oxide nanoparticles doped manganese carbonate catalysts [X% ZnOx–MnCO3] (where X = 0–7) were prepared via a facile and straightforward coprecipitation procedure, which upon different calcination treatments yields different manganese oxides, that is, [X% ZnOx–MnO2] and [X% ZnOx–Mn2O3]. A comparative catalytic study was conducted to evaluate the catalytic efficiency between carbonates and oxides for the selective oxidation of secondary alcohols to corresponding ketones using molecular oxygen as a green oxidizing agent without using any additives or bases. The prepared catalysts were characterized by different techniques such as SEM, EDX, XRD, TEM, TGA, BET, and FTIR spectroscopy. The 1% ZnOx–MnCO3 calcined at 300°C exhibited the best catalytic performance and possessed highest surface area, suggesting that the calcination temperature and surface area play a significant role in the alcohol oxidation. The 1% ZnOx–MnCO3 catalyst exhibited superior catalytic performance and selectivity in the aerial oxidation of 1-phenylethanol, where 100% alcohol conversion and more than 99% product selectivity were obtained in only 5 min with superior specific activity (48 mmol·g−1·h−1) and 390.6 turnover frequency (TOF). The specific activity obtained is the highest so far (to the best of our knowledge) compared to the catalysts already reported in the literatures used for the oxidation of 1-phenylethanol. It was found that ZnOx nanoparticles play an essential role in enhancing the catalytic efficiency for the selective oxidation of alcohols. The scope of the oxidation process is extended to different types of alcohols. A variety of primary, benzylic, aliphatic, allylic, and heteroaromatic alcohols were selectively oxidized into their corresponding carbonyls with 100% convertibility without overoxidation to the carboxylic acids under base-free conditions.
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Fabrication and characterization of tungsten-containing mesoporous silica for heterogeneous oxidative desulfurization. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61103-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shaabani A, Borjian Boroujeni M, Laeini MS. Porous chitosan-MnO2
nanohybrid: a green and biodegradable heterogeneous catalyst for aerobic oxidation of alkylarenes and alcohols. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3412] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ahmad Shaabani
- Faculty of Chemistry; Shahid Beheshti University; GC, PO Box 19396-4716 Tehran Iran
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