Catalyst preparation and deactivation issues for nitrobenzene hydrogenation in a microstructured falling film reactor

Yeong, Kay Kin; Gavriilidis, Asterios; Zapf, Ralf; Hessel, Volker

doi:10.1016/s0920-5861(03)00162-7

Cited by 143 publications

(97 citation statements)

References 26 publications

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“…[190] Pd catalysts were deposited by sputtering onto the microstructured plates via the decomposition of Pd(OAc) 2 with UV light, impregnation of g-Al 2 O 3 with palladium nitrate, or through the incipient wetness method, and hydrogenation was carried out at 60 8C and 1-4 bar H 2 . Catalysts prepared by the latter two methods gave the best results (82 % conversions).…”

Section: Catalytic Hydrogenation Of Nitrobenzenementioning

confidence: 99%

Chemistry in Microstructured Reactors

et al. 2004

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The application of microstructured reactors in the chemical process industry has gained significant importance in recent years. Companies that offer not only microstructured reactors, but also entire chemical process plants and services relating to them, are already in existence. In addition, many institutes and universities are active within this field, and process-engineering-oriented reviews and a specialized book are available. Microstructured systems can be applied with particular success in the investigation of highly exothermic and fast reactions. Often the presence of temperature-induced side reactions can be significantly reduced through isothermal operations. Although microstructured reaction techniques have been shown to optimize many synthetic procedures, they have not yet received the attention they deserve in organic chemistry. For this reason, this Review aims to address this by providing an overview of the chemistry in microstructured reactors, grouped into liquid-phase, gas-phase, and gas-liquid reactions.

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Section: Catalytic Hydrogenation Of Nitrobenzenementioning

confidence: 99%

Chemistry in Microstructured Reactors

et al. 2004

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“…Micro sieve contactor: Both phases flow on top of each other in a closed channel while the interphase is stabilized by a microsieve [22]. In recent years, all three gas/liquid contactors have been used for heterogeneously catalyzed gas-liquid reactions [18,[23][24][25][26], and a good overview is presented in reference [27]. These works mainly show the feasibility of gas/liquid …”

Section: Heterogeneously Catalyzed Gas-liquid Reactionsmentioning

confidence: 99%

Microstructured Reactors in Heterogenous Catalysis

Klemm¹,

Döring²,

Geisselmann³

et al. 2007

Chem Eng & Technol

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A number of heterogeneously catalyzed reactions, mainly gas-phase reactions, have been performed previously at a laboratory scale and a successful proof of concept was achieved. Since the beginning of this century, there has been a shift in focus on the transfer from laboratory scale to production scale. In particular, this review deals with the technical concepts and economic aspects involved in such a shift. Heterogenously catalyzed gas-phase and liquid-phase processes are discussed separately. The preparation of wall catalysts is a key technology in both cases and is described in an additional subsection. Finally, an evaluation of the developmental status is given.

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“…Therefore, the film-MSR offers excellent heat and mass transfer capabilities. This was proven with the hydrogenation of nitrobenzene [108] and the hydrogenation of cyclohexene [109]. In both cases alumina was deposited on the wall by washcoating with subsequent Pd deposition by impregnation.…”

Section: Msr For Catalytic Three-phase Reactionsmentioning

confidence: 99%

Microstructured Reactors for Catalytic Reactions

Kiwi‐Minsker

Renken

2006

ChemInform

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This review addresses the catalytic reactions performed in microstructured reactors, which are more and more recognized in recent years as a novel approach for chemistry and chemical process industry. They are particularly suited for highly exothermic and fast reactions allowing temperature control and isothermal operation. A brief evaluation of the advantages for gas-phase, liquid-phase, and gas-liquid-solid reactions carried out in miniaturized devices is discussed. Alternative designs to achieve microstructured fluid patterns, besides microfabrication, are also described. #

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Catalyst preparation and deactivation issues for nitrobenzene hydrogenation in a microstructured falling film reactor

Cited by 143 publications

References 26 publications

Chemistry in Microstructured Reactors

Chemistry in Microstructured Reactors

Microstructured Reactors in Heterogenous Catalysis

Microstructured Reactors for Catalytic Reactions

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