The absorption of ν(CO) red-shifts at increasing CO2 pressure, and this red-shift is more significant for cinnamaldehyde than for benzaldehyde, indicating that the CO bond of the former becomes more reactive than the latter. The hydrogenation of benzaldehyde and cinnamaldehyde has been studied with a 5% Pt/C catalyst in compressed CO2. Synthesis of polyurea from 1,6-hexanediamine with CO 2 through a two-step polymerization. catalyst under supercritical condition. Cinnamic acid is a white crystalline compound with the formula … Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. The yield for benzaldehyde could reach 70% under the optimized conditions (323 K, 5 h, 2% NaOH (w/v), cinnamaldehyde: 2-HPβ-CD=1:1 (molar ratio)). Find more information on the Altmetric Attention Score and how the score is calculated. Wenjing Yang, Haiyang Cheng, Bin Zhang, Yan Li, Tong Liu, Mingli Lan, Yancun Yu, Chao Zhang, Weiwei Lin, Shin-ichiro Fujita, Masahiko Arai, Fengyu Zhao. © 2003-2020 Chegg Inc. All rights reserved. In a typical experiment, cinnamaldehyde … https://doi.org/10.1021/acssuschemeng.7b02974, https://doi.org/10.1016/j.cattod.2020.01.022, https://doi.org/10.1016/j.molstruc.2019.02.057, https://doi.org/10.1007/s10562-017-2218-y, https://doi.org/10.1016/j.gee.2017.05.001, https://doi.org/10.1016/j.cej.2017.04.026, https://doi.org/10.1016/j.jcis.2015.10.026, https://doi.org/10.1007/s11144-015-0837-0, https://doi.org/10.1016/j.jcis.2013.10.011, https://doi.org/10.1016/j.catcom.2013.12.024, https://doi.org/10.1007/978-3-642-44988-8_14, https://doi.org/10.1016/j.apcata.2013.07.028, https://doi.org/10.1016/j.apcata.2013.01.028, https://doi.org/10.1016/j.apcata.2012.07.027, https://doi.org/10.1016/j.apcata.2012.05.046, https://doi.org/10.1016/j.supflu.2011.02.016, https://doi.org/10.1002/9783527632220.refs, https://doi.org/10.1016/j.supflu.2010.05.008, https://doi.org/10.1007/s11426-010-3205-y, https://doi.org/10.1016/j.supflu.2010.03.002, https://doi.org/10.1016/j.cplett.2010.04.046, https://doi.org/10.1007/s10562-009-0189-3, https://doi.org/10.1016/j.supflu.2009.08.006, https://doi.org/10.1007/s10562-009-0130-9, https://doi.org/10.1016/j.cattod.2009.07.072, https://doi.org/10.1016/j.micromeso.2008.06.029, https://doi.org/10.1016/j.supflu.2008.08.012, https://doi.org/10.1016/j.supflu.2008.03.009, https://doi.org/10.1016/j.supflu.2008.03.006, https://doi.org/10.1016/j.molcata.2007.11.027, https://doi.org/10.1016/j.catcom.2007.07.002, https://doi.org/10.1016/j.catcom.2007.05.033, https://doi.org/10.1016/j.molcata.2006.12.032, https://doi.org/10.1016/j.supflu.2006.05.003, https://doi.org/10.1016/j.apcata.2006.08.040, https://doi.org/10.1016/j.molcata.2006.01.022. Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. The effect of water on the hydrogenation of o-chloronitrobenzene in ethanol, n-heptane and compressed carbon dioxide. Step 1 is a crossed aldol reaction. A critical look at reactions in class I and II gas-expanded liquids using CO2 and other gases. Hydrogenation of phenol in scCO2 over carbon nanofiber supported Rh catalyst. Efficient Hydrogenation of Benzaldehydes Over Mesopolymer-Entrapped Pt Nanoparticles in Water. The inclusion equilibrium constant Ka was 928 M−1 at 298 K. The inclusion complex activated the substrate and promoted the reaction selectivity. Hiroshi Yoshida, Toshiaki Zama, Shin-ichiro Fujita, Joongjai Panpranot, Masahiko Arai. by ISO TC 54 | Aug 23, 2007. Shin-ichiro Fujita, Takuya Yamada, Yoshinari Akiyama, Haiyang Cheng, Fengyu Zhao, Masahiko Arai. Ruixia Liu, Fengyu Zhao, Shin-ichiro Fujita, Masahiko Arai. High-pressure FTIR measurements indicate the existence of interactions of CO2 with the aldehydes. Further investigation on kinetics and solubilization revealed that the binding ability between 2-HPβ-CD and cinnamaldehyde is primarily responsible for the catalytic effects. Effect of heteroatom substituted mesoporous support on the selective hydrogenation of cinnamaldehyde in supercritical carbon dioxide. 3 Enhanced Selectivity of Phenol Hydrogenation in Low-Pressure CO2 over Supported Pd Catalysts. Ran Zhang, Li Hua, Li Guo, Baoning Song, Jizhong Chen, Zhenshan Hou. Hydrogenation of phenol with supported Rh catalysts in the presence of compressed CO2: Its effects on reaction rate, product selectivity and catalyst life. Selective hydrogenation of cinnamaldehyde in supercritical CO2 over Pt/SiO2 and Pt/HS-CeO2: An insight about the role of carbonyl interaction with supercritical CO2 or with ceria support sites in cinamyl alcohol selectivity. All reactions were performed in a 100 mL glass reaction flask equipped with a condenser.
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