1
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One pot synthesis of chromium incorporated SBA-16 under acid medium-Application in the selective oxidation of benzyl alcohol derivatives. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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2
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3
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Tailoring oxygen vacancies in ZSM-5@MnOx catalysts for efficient oxidation of benzyl alcohol. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Synthesis and Characterization of CoxOy–MnCO3 and CoxOy–Mn2O3 Catalysts: A Comparative Catalytic Assessment Towards the Aerial Oxidation of Various Kinds of Alcohols. Processes (Basel) 2020. [DOI: 10.3390/pr8080910] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
CoxOy–manganese carbonate (X%)(CoxOy–MnCO3 catalysts (X = 1–7)) were synthesized via a straightforward co-precipitation strategy followed by calcination at 300 °C. Upon calcination at 500 °C, these were transformed to CoxOy–dimanganese trioxide i.e., (X%)CoxOy–Mn2O3. A relative catalytic evaluation was conducted to compare the catalytic efficiency of the two prepared catalysts for aerial oxidation of benzyl alcohol (BzOH) to benzaldehyde (BzH) using O2 molecule as a clean oxidant without utilizing any additives or alkalis. Amongst the different percentages of doping with CoxOy (0–7% wt./wt.) on MnCO3 support, the (1%)CoxOy–MnCO3 catalyst exhibited the highest catalytic activity. The influence of catalyst loading, calcination temperature, reaction time, and temperature and catalyst dosage was thoroughly assessed to find the optimum conditions of oxidation of benzyl alcohol (BzOH) for getting the highest catalytic efficiency. The (1%)CoxOy–MnCO3 catalyst which calcined at 300 °C displayed the best effectiveness and possessed the largest specific surface area i.e., 108.4 m2/g, which suggested that the calcination process and specific surface area play a vital role in this transformation. A 100% conversion of BzOH along with BzH selectivity >99% was achieved after just 20 min. Notably, the attained specific activity was found to be considerably larger than the previously-reported cobalt-containing catalysts for this transformation. The scope of this oxidation reaction was expanded to various alcohols containing aromatic, aliphatic, allylic, and heterocyclic alcohols without any further oxidation i.e., carboxylic acid formation. The scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and Brunauer–Emmett–Teller (BET) specific surface area analytical techniques were used to characterize the prepared catalysts. The obtained catalyst could be easily regenerated and reused for six consecutive runs without substantial decline in its efficiency.
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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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Recent advancement in oxidation or acceptorless dehydrogenation of alcohols to valorised products using manganese based catalysts. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213241] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Ahmed KAM. Exploitation of KMnO4 material as precursors for the fabrication of manganese oxide nanomaterials. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1016/j.jtusci.2015.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Khalid Abdelazez Mohamed Ahmed
- Department of Chemistry, Faculty of Science and Technology, Al-Neelain University, P.O. Box 12702, Khartoum, Sudan
- Department of Chemistry, Faculty of Science and Education, Taif University, P.O. Box 888, 5700, Saudi Arabia
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Sultana S, Ali R, Kuniyil M, Khan M, Alwarthan A, Kishore D, Assal M, Prasad K, Ahmad N, Siddiqui MRH, Adil SF. Ytterbia doped nickel–manganese mixed oxide catalysts for liquid phase oxidation of benzyl alcohol. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2017.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Sultana S, Kishore D, Kuniyil M, Khan M, Siddiqui MRH, Alwarthan A, Prasad K, Ahmad N, Adil SF. Promoting effects of thoria on the nickel-manganese mixed oxide catalysts for the aerobic oxidation of benzyl alcohol. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2017.01.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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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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11
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Hu Z, Zhao Y, Liu J, Wang J, Zhang B, Xiang X. Ultrafine MnO2 nanoparticles decorated on graphene oxide as a highly efficient and recyclable catalyst for aerobic oxidation of benzyl alcohol. J Colloid Interface Sci 2016; 483:26-33. [PMID: 27544446 DOI: 10.1016/j.jcis.2016.08.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 11/26/2022]
Abstract
The highly active and selective aerobic oxidation of aromatic alcohols over earth-abundant, inexpensive and recyclable catalysts is highly desirable. We fabricated herein MnO2/graphene oxide (GO) composites by a facile in-situ growth approach at room temperature and used them in selective aerobic oxidation of benzyl alcohol to benzaldehyde. TEM, XRD, FTIR, XPS and N2 adsorption/desorption analysis were employed to systematically investigate the morphology, particle size, structure and surface properties of the catalysts. The 96.8% benzyl alcohol conversion and 100% benzaldehyde selectivity over the MnO2/GO (10/100) catalyst with well dispersive ultrafine MnO2 nanoparticles (ca. 3nm) can be obtained within 3h under 383K. Simultaneously, no appreciable loss of activity and selectivity occurred after recycling use up to six times. Due to their significant low cost, excellent catalytic performance, the MnO2/GO composites have huge application prospect in organic synthesis.
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Affiliation(s)
- Zonggao Hu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Yafei Zhao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jindun Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jingtao Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Bing Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Xu Xiang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
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12
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Yao L, Zhang L, Liu Y, Tian L, Xu J, Liu T, Liu D, Wang C. MnCo2O4and CoMn2O4octahedral nanocrystals synthesized via a one-step co-precipitation process and their catalytic properties in benzyl alcohol oxidation. CrystEngComm 2016. [DOI: 10.1039/c6ce01905f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Du Y, Wang Q, Liang X, He Y, Feng J, Li D. Hydrotalcite-like MgMnTi non-precious-metal catalyst for solvent-free selective oxidation of alcohols. J Catal 2015. [DOI: 10.1016/j.jcat.2015.08.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Ali R, Nour K, Al-warthan A, Siddiqui MRH. Selective oxidation of benzylic alcohols using copper-manganese mixed oxide nanoparticles as catalyst. ARAB J CHEM 2015. [DOI: 10.1016/j.arabjc.2013.05.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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15
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Mahdavi V, Mardani M. Mn(Salen)Cl complexes immobilized on SBA-15 functionalized with amine as an efficient, selective and recyclable catalyst for benzyl alcohol oxidation by TBHP: the effects of Mn loading and reaction conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1937-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Cao Y, Xiao Y, Gong Y, Wang C, Li F. One-pot synthesis of MnOOH nanorods on graphene for asymmetric supercapacitors. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.025] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Guo Z, Liu B, Zhang Q, Deng W, Wang Y, Yang Y. Recent advances in heterogeneous selective oxidation catalysis for sustainable chemistry. Chem Soc Rev 2014; 43:3480-524. [PMID: 24553414 DOI: 10.1039/c3cs60282f] [Citation(s) in RCA: 452] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Oxidation catalysis not only plays a crucial role in the current chemical industry for the production of key intermediates such as alcohols, epoxides, aldehydes, ketones and organic acids, but also will contribute to the establishment of novel green and sustainable chemical processes. This review is devoted to dealing with selective oxidation reactions, which are important from the viewpoint of green and sustainable chemistry and still remain challenging. Actually, some well-known highly challenging chemical reactions involve selective oxidation reactions, such as the selective oxidation of methane by oxygen. On the other hand some important oxidation reactions, such as the aerobic oxidation of alcohols in the liquid phase and the preferential oxidation of carbon monoxide in hydrogen, have attracted much attention in recent years because of their high significance in green or energy chemistry. This article summarizes recent advances in the development of new catalytic materials or novel catalytic systems for these challenging oxidation reactions. A deep scientific understanding of the mechanisms, active species and active structures for these systems are also discussed. Furthermore, connections among these distinct catalytic oxidation systems are highlighted, to gain insight for the breakthrough in rational design of efficient catalytic systems for challenging oxidation reactions.
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Affiliation(s)
- Zhen Guo
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore.
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18
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Yang J, Hua Q, Chang S, Yu X, Ma Y, Huang W. Catalytic Performance of MnOx Nanorods in Aerobic Oxidation of Benzyl Alcohol. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/04/424-430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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19
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Identification of Active Phase for Selective Oxidation of Benzyl Alcohol with Molecular Oxygen Catalyzed by Copper-Manganese Oxide Nanoparticles. J CHEM-NY 2013. [DOI: 10.1155/2013/367261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Catalytic activity of copper-manganese mixed oxide nanoparticles (Cu/Mn = 1 : 2) prepared by coprecipitation method has been studied for selective oxidation of benzyl alcohol using molecular oxygen as an oxidizing agent. The copper-manganese (CuMn2) oxide catalyst exhibited high specific activity of 15.04 mmolg−1 h−1in oxidation of benzyl alcohol in toluene as solvent. A 100% conversion of the benzyl alcohol was achieved with >99% selectivity to benzaldehyde within a short reaction period at 102°C. It was found that the catalytic performance is dependent on calcination temperature, and best activity was obtained for the catalyst calcined at 300°C. The high catalytic performance of the catalyst can be attributed to the formation of active MnO2phase or absence of less active Mn2O3phase in the mixed CuMn2oxide. The catalyst has been characterized by powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer Emmett-Teller (BET) surface area measurement, and Fourier transform infrared (FT-IR) spectroscopies.
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Sun H, Zhang Y, Guo F, Zha Z, Wang Z. Regioselective Oxyalkylation of Vinylarenes Catalyzed by Diatomite-Supported Manganese Oxide Nanoparticles. J Org Chem 2012; 77:3563-9. [DOI: 10.1021/jo2026367] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Huayin Sun
- Hefei National
Laboratory for Physical Sciences at
Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yonghui Zhang
- Hefei National
Laboratory for Physical Sciences at
Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Fengfeng Guo
- Hefei National
Laboratory for Physical Sciences at
Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Zhenggen Zha
- Hefei National
Laboratory for Physical Sciences at
Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Zhiyong Wang
- Hefei National
Laboratory for Physical Sciences at
Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
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Sun HY, Hua Q, Guo FF, Wang ZY, Huang WX. Selective Aerobic Oxidation of Alcohols by Using Manganese Oxide Nanoparticles as an Efficient Heterogeneous Catalyst. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100666] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Schoenfeldt NJ, Ni Z, Korinda AW, Meyer RJ, Notestein JM. Manganese Triazacyclononane Oxidation Catalysts Grafted under Reaction Conditions on Solid Cocatalytic Supports. J Am Chem Soc 2011; 133:18684-95. [DOI: 10.1021/ja204761e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas J. Schoenfeldt
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
| | - Zhenjuan Ni
- Department of Chemical Engineering, University of Illinois at Chicago, 810 South Clinton Street, Chicago, Illinois 60607, United States
| | - Andrew W. Korinda
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
| | - Randall J. Meyer
- Department of Chemical Engineering, University of Illinois at Chicago, 810 South Clinton Street, Chicago, Illinois 60607, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
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Li Z, Xu J, Chen X, Zhou Q, Shang T. A simple hydrothermal route to synthesis of rod-like MnOOH and spindle-shaped MnCO3. Colloid Polym Sci 2011. [DOI: 10.1007/s00396-011-2486-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li Z, Bao H, Miao X, Chen X. A facile route to growth of γ-MnOOH nanorods and electrochemical capacitance properties. J Colloid Interface Sci 2011; 357:286-91. [DOI: 10.1016/j.jcis.2011.02.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 02/02/2011] [Accepted: 02/03/2011] [Indexed: 11/25/2022]
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Peng X, Ichinose I. Manganese oxyhydroxide and oxide nanofibers for high efficiency degradation of organic pollutants. NANOTECHNOLOGY 2011; 22:015701. [PMID: 21135451 DOI: 10.1088/0957-4484/22/1/015701] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ultrathin MnOOH nanofibers were synthesized on a large scale from diluted Mn(NO(3))(2) aqueous solution at room temperature. These MnOOH nanofibers were shape-reservedly converted into Mn(3)O(4) and MnO(2) nanofibers by post-heat treatment in air at 400 °C and 600 °C for 1 h, respectively. The morphology and crystalline structures of the nanofibers were characterized by electronic microscopes and x-ray diffraction. These nanofibers had good crystalline structures. These nanofibers were in bundles with a diameter of 25 nm composed of 3-5 nm fine crystalline nanofibers. The Mn(3)O(4) nanofibers had a specific surface area of 71 m(2) g(-1) and demonstrated highly catalytic degradation of the organic pollutant methylene blue with the assistance of H(2)O(2) at room temperature.
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Affiliation(s)
- Xinsheng Peng
- State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China
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Aerobic Oxidation of Benzyl Alcohol over Activated Carbon Supported Manganese and Vanadium Catalysts: Effect of Surface Oxygen-Containing Groups. Catal Letters 2010. [DOI: 10.1007/s10562-010-0447-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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