Academic literature on the topic 'Acetic acid hydrogenation'

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Journal articles on the topic "Acetic acid hydrogenation"

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Mashi, Ahmed Lawal, and Muhammad Sulaiman Rahama. "Optimization of process factors using the Taguchi method of DOE towards the hydrodeoxygenation of acetic acid." Ovidius University Annals of Chemistry 31, no. 1 (2020): 38–43. http://dx.doi.org/10.2478/auoc-2020-0008.

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AbstractThis paper reports the optimization of process factors using the Taguchi method towards the conversion of acetic acid and ethanol yield during the hydrogenation of acetic acid over 4% Pt/TiO2. The acidity of 4% Pt/TiO2 was characterized using NH3-Temperature Programmed Desorption analysis (NH3-TPD). Afterwards, the effect of temperature on the hydrogenation of acetic acid as an individual feed was investigated. The reaction space explored in the following ranges: temperature 80-200 °C, pressure 10-40 bar, time 1-4 h, catalyst 0.1-0.4 g and stirring speed 400-1000 min−1 using 4% Pt/TiO2
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Zhao, Yuanyuan, Kansei Konishi, Eiji Minami, Shiro Saka, and Haruo Kawamoto. "Hydrogenation of Aqueous Acetic Acid over Ru-Sn/TiO2 Catalyst in a Flow-Type Reactor, Governed by Reverse Reaction." Catalysts 10, no. 11 (2020): 1270. http://dx.doi.org/10.3390/catal10111270.

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Ru-Sn/TiO2 is an effective catalyst for hydrogenation of aqueous acetic acid to ethanol. In this paper, a similar hydrogenation process was investigated in a flow-type rather than a batch-type reactor. The optimum temperature was 170 °C for the batch-type reactor because of gas production at higher temperatures; however, for the flow-type reactor, the ethanol yield increased with reaction temperature up to 280 °C and then decreased sharply above 300 °C, owing to an increase in the acetic acid recovery rate. The selectivity for ethanol formation was improved over the batch process, and an ethan
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Zhou, Minghao, Peng Liu, Kui Wang, Junming Xu, and Jianchun Jiang. "Catalytic hydrogenation and one step hydrogenation-esterification to remove acetic acid for bio-oil upgrading: model reaction study." Catalysis Science & Technology 6, no. 21 (2016): 7783–92. http://dx.doi.org/10.1039/c6cy01792d.

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RACHMADY, W., and M. VANNICE. "Acetic acid hydrogenation over supported platinum catalysts." Journal of Catalysis 192, no. 2 (2000): 322–34. http://dx.doi.org/10.1006/jcat.2000.2863.

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Pestman, R., R. M. Koster, and V. Ponec. "Selective hydrogenation of acetic acid towards acetaldehyde." Recueil des Travaux Chimiques des Pays-Bas 113, no. 10 (1994): 426–30. http://dx.doi.org/10.1002/recl.19941131004.

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Makolkin, N. V., E. A. Paukshtis, V. V. Kaichev, et al. "Key intermediates in the hydrogenation of carboxylic acids over Pt-ReOx/TiO2 catalyst." Kataliz v promyshlennosti 22, no. 2 (2022): 18–24. http://dx.doi.org/10.18412/1816-0387-2022-2-18-24.

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The reactivity of different forms of adsorbed acetic acid on the Pt-ReOx/TiO2 catalyst was studied. To this end, in situ FTIR spectroscopy at T = 200 °С was used to identify three forms of adsorbed acetic acid: bidentate acetates and two forms of molecularly adsorbed acetic acid (1645–1653 and 1700–1720 cm–1). Rate constants for the consumption of two forms of molecularly adsorbed acetic acid, which are equal to 0.029 and 0.02 s–1, respectively, were found to be close to the rate constant of the catalytic reaction equal to 0.034 s–1, which was measured at T = 200 °С. It was concluded that two
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Chen, Qiang, Xuebing Zhang, Shuxun Tian, et al. "Kinetics of Hydrogenation of Acetic Acid to Ethanol." Asian Journal of Chemistry 31, no. 12 (2019): 2915–23. http://dx.doi.org/10.14233/ajchem.2019.22277.

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The intrinsic kinetic behaviour of catalytic hydrogenation of acetic acid in vapour phase was studied over a multi-metallic catalyst. The rate expression was derived from the sequence of elementary reaction steps based on a Langmuir-Hinshelwood-model involving two types of active sites. Experiments were carried out in a fixed bed reactor, which is similar to an isothermal integral reactor designed to excluding the negative effects of internal and external diffusion. The reaction conditions investigated were as follow:reaction temperature 275-325 ºC, reaction pressure1.5-3.0 MPa, liquid hourly
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Zhang, Minhua, Rui Yao, Haoxi Jiang, Guiming Li, and Yifei Chen. "Catalytic activity of transition metal doped Cu(111) surfaces for ethanol synthesis from acetic acid hydrogenation: a DFT study." RSC Advances 7, no. 3 (2017): 1443–52. http://dx.doi.org/10.1039/c6ra26373a.

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Zhou, Jiahua, Yujun Zhao, Jian Zhang, et al. "A nitrogen-doped PtSn nanocatalyst supported on hollow silica spheres for acetic acid hydrogenation." Chemical Communications 54, no. 64 (2018): 8818–21. http://dx.doi.org/10.1039/c8cc03649g.

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Chen, Yifei, Ziwei Zhai, Jiatao Liu, Jia Zhang, Zhongfeng Geng, and Huisheng Lyu. "The synergistic effects of Cu clusters and In2O3 on ethanol synthesis from acetic acid hydrogenation." Physical Chemistry Chemical Physics 21, no. 43 (2019): 23906–15. http://dx.doi.org/10.1039/c9cp04766b.

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Dissertations / Theses on the topic "Acetic acid hydrogenation"

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Lynch, Ailsa S. "Base-metal catalysis for the hydrogenation of acetic acid." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5162/.

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Increasing global ethanol consumption has revived research into a variety of route for the synthesis of ethanol. One such route is via the hydrogenation of acetic acid, for which a catalyst with significant acid tolerance is required. The objective of finding an active, acid tolerant base metal catalyst was central to this project. In this study, a commercial methanol synthesis catalyst was initially investigated for its viability as an acid hydrogenation catalyst, following the production of ethanol when acetic acid was passed over it in a different study [1]. The methanol synthesis catalyst
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Zhao, Yuanyuan. "Hydrogenation of aqueous acetic acid to bioethanol over TiO₂-supported Ru-Sn and Ni-Sn catalysts." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263753.

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Book chapters on the topic "Acetic acid hydrogenation"

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Taber, Douglass. "Alkaloid Synthesis: Crispine A (Zhou), Cermizine C (Zhang), Tangutorine (Poupon), FR901483 (Kerr), Serratezomine A (Johnston)." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0061.

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Enantioselective hydrogenation of enamides is a well-established transformation. The corresponding reduction of enamines has been elusive. Qi-Lin Zhou of Nankai University designed (J. Am. Chem. Soc. 2009, 131, 1366) an Ir catalyst that reduced 2 to the Carpus alkaloid Crispine A 3 in high ee. Direct conversion of C-H to C-C bonds is a powerful synthetic transformation. Liming Zhang, now at the University of California, Santa Barbara, observed (J. Am. Chem. Soc. 2009, 131, 8394) that a gold catalyst converted the N-oxide of 4 into 5, that was then deoxygenated to give Cermizine C 6. The gold c
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Taber, Douglass F. "The Qin Synthesis of (+)-Gelsemine." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0093.

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(+)-Gelsemine 3 has no particular biological activity, but its intricate architecture continues to inspire the ingenuity of organic synthesis chemists. Yong Qin of Sichuan University devised (Angew. Chem. Int. Ed. 2012, 51, 4909) an enantiospecific synthesis of 3, a key step of which was the cyclization of 1 to 2. The starting material for the synthesis was the inexpensive diethyl tartrate 4, which was converted over six steps into the N-sulfonyl aziridine 5. The addition of 6 was highly regioselective, leading, after N-methylation, to the alkyne 7. After alcohol protection, the sulfonyl group
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Taber, Douglass F. "The Ma Synthesis of (-)-GB 13." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0098.

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An investigation of the activity of the Galbulimima alkaloids, exemplified by (-)- GB 13, led to the development of a series of potent thrombin receptor antagonists. Dawei Ma of the Shanghai Institute of Organic Chemistry devised (Angew. Chem. Int. Ed. 2010, 49, 5887) a concise route to 3 based on the coupling of the chirons 1 and 2. The starting point for the preparation of 1 was the unsaturated ester 4. Cyclization using the chiral enamine protocol developed by d’Angelo delivered the keto ester 6. Reduction with NaBH4 proceeded with substantial diastereocontrol to give an intermediate alcoho
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Taber, Douglass F. "C–C Bond Construction: The Kingsbury Synthesis of (−)-Dihydrocuscohygrine." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0024.

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Akio Baba of Osaka University combined (Chem. Lett. 2013, 42, 1551) reduction of the acid 1 with subsequent condensation with the ketene silyl acetal 2 to directly give the coupled product 3. Song-Lin Zhang of Soochow University showed (Chem. Commun. 2013, 49, 10635) that the allyl Sm reagent 5 could be added to an aldehyde 4 under reducing conditions, leading to the alkene 6. In a related development, Patrick Perlmutter of Monash University reduced (Org. Lett. 2013, 15, 4327) the interme­diate lactol from addition of the alkyl lithium reagent 8 to the lactone 7, to give the alcohol 9. Yoshihi
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Reports on the topic "Acetic acid hydrogenation"

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Zaman, Sharif F., Hisham S. Bamufleh, Abdulrahim Al-Zahrani, Mohammed Raoof Ahmed Rafiqui, Yahia A. Alhamed, and Lachezar Petrov. Acetic Acid Hydrogenation over Silica Supported MoP Catalyst. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2018. http://dx.doi.org/10.7546/crabs.2018.01.04.

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Zaman, Sharif F., Hisham S. Bamufleh, Abdulrahim Al-Zahrani, Mohammed Raoof Ahmed Rafiqui, Yahia A. Alhamed, and Lachezar Petrov. Acetic Acid Hydrogenation over Silica Supported MoP Catalyst. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2018. http://dx.doi.org/10.7546/grabs2018.1.04.

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