Gas phase oxidation of benzene to phenol ad hydroquinone by using an H2O2 fuel cell system

Yamanaka, Ichiro; Akimoto, Takashi; Otsuka, Kiyoshi

doi:10.1016/0013-4686(94)00253-3

Cited by 22 publications

(9 citation statements)

References 10 publications

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“…Another innovative approach for the production of hydrogen peroxide from H 2 and air with the simultaneous generation of electricity in a fuel cell relies on the chemical attachment of quinones to a carbon electrode. [206] The essence of this process is the electrochemical production of hydrogen peroxide at the cathode through reduction of O 2 and subsequent chemical reaction with an organic substrate. In this new approach, the quinone moiety is attached on the surface of a glassy-carbon electrode (Figure 9).…”

Section: Fuel Cellsmentioning

confidence: 99%

“…[204] H 2 O 2 generated in situ from O 2 and H 2 in a polymer electrolyte membrane fuel cell can be used for the direct hydroxylation of benzene to phenol with the simultaneous generation of electricity in both the liquid [205] and gas phase. [206] The essence of this process is the electrochemical production of hydrogen peroxide at the cathode through reduction of O 2 and subsequent chemical reaction with an organic substrate. [207] Figure 10 illustrates the experimental setup of the membrane-electrode assembly.…”

Section: Fuel Cellsmentioning

confidence: 99%

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Hydrogen Peroxide Synthesis: An Outlook beyond the Anthraquinone Process

2006

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Hydrogen peroxide (H2O2) is widely used in almost all industrial areas, particularly in the chemical industry and environmental protection. The only degradation product of its use is water, and thus it has played a large role in environmentally friendly methods in the chemical industry. Hydrogen peroxide is produced on an industrial scale by the anthraquinone oxidation (AO) process. However, this process can hardly be considered a green method. It involves the sequential hydrogenation and oxidation of an alkylanthraquinone precursor dissolved in a mixture of organic solvents followed by liquid-liquid extraction to recover H2O2. The AO process is a multistep method that requires significant energy input and generates waste, which has a negative effect on its sustainability and production costs. The transport, storage, and handling of bulk H2O2 involve hazards and escalating expenses. Thus, novel, cleaner methods for the production of H2O2 are being explored. The direct synthesis of H2O2 from O2 and H2 using a variety of catalysts, and the factors influencing the formation and decomposition of H2O2 are examined in detail in this Review.

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Section: Fuel Cellsmentioning

confidence: 99%

Section: Fuel Cellsmentioning

confidence: 99%

Hydrogen Peroxide Synthesis: An Outlook beyond the Anthraquinone Process

2006

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“…Otsuka et al . [58,59] were the first to study another kind of membrane reactor, a fuel cell, to perform the onestep oxidation of benzene to phenol using H 2 -O 2 fuel cell both in liquid phase and in gas phase. The fuel cells…”

Section: One-step Oxidation Using O 2 As Oxidantmentioning

confidence: 99%

Remarks on studies for direct production of phenol in conventional and membrane reactors

Molinari

Poerio

2009

Asia-Pacific J Chem Eng

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The great interest in the oxidation reaction of benzene to phenol is linked to some disadvantages of the cumene process, such as environmental impact, production of an explosive intermediate, a multi-step process (which involves (1) difficulty to achieve high phenol yield, in relation to the benzene used and (2) high capital investment), and a high acetone production as a co-product which results in an over supply in the market.In this paper, we discuss various studies concerning a new approach based on a one-step and acetone-free method for phenol production. Particular attention is devoted to phenol production processes using various configurations of membrane reactors (MRs) and a photocatalytic membrane reactor (PMR). In particular, the biphasic MR allowed to achieving high selectivity values (97-98%).The described studies have been classified according to oxidant type such as N 2 O, O 2 , and H 2 O 2 . Each of them shows that direct oxidation of benzene to phenol is a difficult task and further efforts are needed to search and replace the three step traditional process of converting benzene into phenol with a process of direct oxidation.  2009 Curtin

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“…Otsuka and Yamanaka et al., for example, showed the selective oxidation of benzene to phenol by an active oxygen species generated at the cathode in a phosphoric acid fuel cell [Reactions (1)–(3)] , , 15. 16 …”

mentioning

confidence: 99%