A Fe-promoted Ni–P amorphous alloy catalyst (Ni–Fe–P) for liquid phase hydrogenation of m- and p-chloronitrobenzene

Yan, Xinhuan; Sun, Jianfei; Wang, Youwen; Yang, Jianfeng

doi:10.1016/j.molcata.2006.01.060

Cited by 89 publications

(31 citation statements)

References 31 publications

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“…Thus, it is possible to generate the efficient H * from water/ethanol donor for the hydrogenation of halogenated nitrobenzenes under the appropriate conditions. The H * on the active sites of the catalyst transferred from water/ethanol donor could be promptly removed by reacting with halogenated nitrobenzene immediately to form the stable amine, which lead to the novel hydrogenation of aromatic nitro compounds in a more efficient way [17] also found that the catalytic activity and selectivity could be enhanced by the Fe-doped catalyst. The electron-deficient Fe promoted the activity of the Ru atoms by activating the polar NO 2 groups of halogenated nitrobenzene and coordinating with the NH 2 groups of produced of aromatic aniline [18,19], and which also could weaken the extent of electron feedback from the Ru atoms to the aromatic ring in aromatic aniline thereby promoting the hydrogenation of halogenated nitrobenzene and further depressing the hydrodehalogenation of aromatic aniline.…”

Section: The Novel Catalytic Transfer Hydrogenation Of Halogenated Nimentioning

confidence: 95%

A Novel Transfer Hydrogenation with High Hydrogen Utilization for the Hydrogenation of Halogenated Nitrobenzene without Hydrodehalogenation

Zhou

Yan

2009

Catal Lett

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In the novel catalytic transfer hydrogenation, 12 active hydrogen (H * ) can be transferred from water/ ethanol system as the efficient hydrogen donor and used directly for the hydrogenation of halogenated nitrobenzene over Ru-Fe/C catalyst, obtaining o-chloroaniline (o-CAN) with 98.0% selectivity at 99.8% conversion without hydrodehalogenation. Most other halogenated nitrobenzenes were reduced with selectivity [98%, and conversion [99.0%. Moreover, the Ru-Fe/C catalyst was still active after reaction for 480 h.

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Section: The Novel Catalytic Transfer Hydrogenation Of Halogenated Nimentioning

confidence: 95%

A Novel Transfer Hydrogenation with High Hydrogen Utilization for the Hydrogenation of Halogenated Nitrobenzene without Hydrodehalogenation

Zhou

Yan

2009

Catal Lett

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“…However, excessive load of Fe x O y led to the overconsumption of ethanol water during FTS, leading to reformed active hydrogen. Meanwhile, a part of Pt-Fe active sites were covered by Fe x O y , which reduced the effective utilization rate of active components [26]. On the contrary, the Fe-in/CNTs did not show the m-CNB in-situ hydrogenation activity, while the catalytic activity of Pt-in-Fe-out/CNTs was improved only to 16.7 h −1 .…”

Section: Introductionmentioning

confidence: 95%

In-Situ Liquid Hydrogenation of m-Chloronitrobenzene over Fe-Modified Pt/Carbon Nanotubes Catalysts

et al. 2018

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Abstract:In-situ liquid-phase hydrogenation of m-chloronitrobenzene (m-CNB) based on aqueous-phase reforming (APR) of ethanol and catalytic hydrogenation was carried out over Fe-modified Pt/carbon nanotubes (CNTs) catalysts. The effects of Pt loading over CNTs and Fe modification on the catalytic performance of Pt/CNTs catalysts were studied. In-tube loading of Pt particles, compared with out-tube loading, considerably improved the catalytic activity. With in-tube loading, Fe-modified Pt/CNTs catalysts further improved the m-CNB in-situ hydrogenation performance. After Fe modification, Pt-Fe/CNTs catalysts formed, inside CNTs, a Pt-Fe alloy and iron oxides, which both improved catalytic hydrogenation performance and significantly enhanced ethanol APR hydrogen producing performance, thereby increasing the m-CNB in-situ hydrogenation reactivity.

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“…Dragieva et al focused on developing amorphous alloys as electrode or catalytic oxidation materials [38][39][40][41][42][43], while Chen and coworkers prepared MPB alloy nanoparticle catalysts for various selective hydrogenation reactions [44][45][46][47][48][49][50]. Amorphous alloy nanoparticulate catalysts have been widely studied by different research groups in China [51][52][53][54][55][56][57][58][59][60]. Among them, our group has attempted to develop NiB and NiP industrial amorphous alloy catalysts in various catalytic hydrogenation reactions [61][62][63][64][65][66][67][68][69][70][71][72].…”

Section: History Of Amorphous Alloy Catalystmentioning

confidence: 99%

Advances in chemical synthesis and application of metal-metalloid amorphous alloy nanoparticulate catalysts

Zhang

et al. 2007

Front. Chem. Eng. China

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This paper reviews the advances in the chemical synthesis and application of metal-metalloid amorphous alloy nanoparticles consisting of transition metal (M) and metalloid elements (B, P). After a brief introduction on the history of amorphous alloy catalysts, the paper focuses on the properties and characterization of amorphous alloy catalysts, and recent developments in the solution-phase synthesis of amorphous alloy nanoparticles. This paper further outlines the applications of amorphous alloys, with special emphasis on the problems and strategies for the application of amorphous alloy nanoparticles in catalytic reactions. History of amorphous alloy catalystAmorphous alloys have been extensively investigated internationally over the last 50 years largely spurred by their unique electronic, magnetic and surface properties and their increasing utility in a broad range of applications [1,2]. The amorphous alloy nanoparticles have gained increasing attention as novel catalytic materials since 1980, with the unique isotropic structure and high concentration of coordinatively unsaturated sites leading to catalytic activity and selectivity superior to their crystalline counterparts [3]. Especially, amorphous alloys chemically reduced by borohydride (BH 4 − ) and hypophosphite (H 2 PO 2 − ) have nanosized morphology and consequently higher surface area and activity than those prepared by the quenching method [4][5][6][7][8]. It has been regarded that the amorphous alloy catalyst can be a potential alternative to Raney nickel or noble metal catalyst in catalytic hydrogenation. Raney nickel has shown many serious disadvantages, such as short lifetimes due to poor sulfur resistance and environmental pollution caused by alkaline leaching during preparation. In contrast, the amorphous alloy nanoparticulate catalysts are inexpensive, environmentally benign, and effective catalytic materials.For the chemical synthesis of metal-metalloid amorphous alloy catalysts, Brown et al. and Paul et al. found that the NiB particles reduced by sodium borohydride in water or ethanol solution showed excellent catalytic activity and selectivity in many hydrogenation reactions [9][10][11][12][13][14][15]. After that, and Chen et al. [21][22][23][24] studied the mechanism of borohydride reduction and the relation between properties and preparation conditions. On the other hand, Deng and coworkers have been interested in studying the properties of amorphous alloy particles and the application of metal boron (MB) and metal phosphorus (MP) amorphous alloys for catalytic hydrogenation [25-37]. Dragieva et al. focused on developing amorphous alloys as electrode or catalytic oxidation materials [38-43], while Chen and coworkers prepared MPB alloy nanoparticle catalysts for various selective hydrogenation reactions [44-50]. Amorphous alloy nanoparticulate catalysts have been widely studied by different research groups in China [51-60]. Among them, our group has attempted to develop NiB and NiP industrial amorphous alloy catalysts in various catalyt...

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A Fe-promoted Ni–P amorphous alloy catalyst (Ni–Fe–P) for liquid phase hydrogenation of m- and p-chloronitrobenzene

Cited by 89 publications

References 31 publications

A Novel Transfer Hydrogenation with High Hydrogen Utilization for the Hydrogenation of Halogenated Nitrobenzene without Hydrodehalogenation

A Novel Transfer Hydrogenation with High Hydrogen Utilization for the Hydrogenation of Halogenated Nitrobenzene without Hydrodehalogenation

In-Situ Liquid Hydrogenation of m-Chloronitrobenzene over Fe-Modified Pt/Carbon Nanotubes Catalysts

Advances in chemical synthesis and application of metal-metalloid amorphous alloy nanoparticulate catalysts

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