Journal ArticleDOI
Hydrogenation of nitrobenzene over palladium-supported catalysts—Effect of support
Palanivelu Sangeetha,Palanivelu Sangeetha,Kannan Shanthi,K.S. Rama Rao,Balasubramanian Viswanathan,Parasuraman Selvam +5 more
TLDR
In this article, the performance of 1.5% Pd supported on hydrotalcite, MgO and γ-Al2O3 catalysts was investigated for the hydrogenation of nitrobenzene.Abstract:
Vapor phase hydrogenation of nitrobenzene is reported on 1 wt.% Pd supported on hydrotalcite, MgO and γ-Al2O3 catalysts. The catalysts were prepared in the laboratory using a wet impregnation method and were characterized by XRD, BET surface area, TPR, TEM, XPS and CO chemisorption studies. The conversion of nitrobenzene was studied in the temperature region of 498–573 K and compared on all the catalysts. An impressive catalytic performance of nitrobenzene conversion was observed on hydrotalcite supported Pd catalyst. CO chemisorption and TEM results prove that palladium disperses better on hydrotalcite supports when compared with other conventional supports such as MgO and γ-Al2O3, which is responsible for the high conversion of nitrobenzene.read more
Citations
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Journal ArticleDOI
Supported catalysts based on layered double hydroxides for catalytic oxidation and hydrogenation: general functionality and promising application prospects
TL;DR: This review summarizes the recent progress in supported catalysts by using LDHs as supports/precursors for catalytic oxidation and hydrogenation and concisely discusses some of the scientific challenges and opportunities ofsupported catalysts based on LDH materials.
Journal ArticleDOI
Palladium nanoparticles stabilized by polyethylene glycol: Efficient, recyclable catalyst for hydrogenation of styrene and nitrobenzene
TL;DR: In this article, an efficient chemical reduction method was developed to produce highly active palladium (Pd) nanoparticles in polyethylene glycol (PEG) with no other stabilizer and the as-prepared Pd/PEG catalyst demonstrated a remarkable catalytic activity toward hydrogenation of both styrene and nitrobenzene under mild conditions.
Journal ArticleDOI
Pd Nanoparticles in Ionic Liquid Brush: A Highly Active and Reusable Heterogeneous Catalytic Assembly for Solvent-Free or On-Water Hydrogenation of Nitroarene under Mild Conditions
TL;DR: In this article, a heterogeneous catalytic assembly of Pd nanoparticles-in-SiO2 supported ionic liquid brushes has been developed, which allowed the hydrogenation of nitrobenzenes to arylamines to proceed under solvent-free or in neat water, room temperature, and normal pressure.
Journal ArticleDOI
Enhanced Chemoselective Hydrogenation through Tuning the Interaction between Pt Nanoparticles and Carbon Supports: Insights from Identical Location Transmission Electron Microscopy and X-ray Photoelectron Spectroscopy
Wen Shi,Wen Shi,Bingsen Zhang,Bingsen Zhang,Yangming Lin,Yangming Lin,Qi Wang,Qi Wang,Qiang Zhang,Dang Sheng Su,Dang Sheng Su +10 more
TL;DR: In this article, trasmall-sized platinum nanoparticles (Pt NPs) supported on carbon nanotubes (CNTs) with nitrogen doping and oxygen functional groups were synthesized and applied in the catalytic hydrogenation of nitroarenes.
Journal ArticleDOI
Vapor phase hydrogenation of aqueous levulinic acid over hydroxyapatite supported metal (M = Pd, Pt, Ru, Cu, Ni) catalysts.
Medak Sudhakar,Vipin Kumar,Gutta Naresh,Gutta Naresh,M. Lakshmi Kantam,Suresh K. Bhargava,Akula Venugopal +6 more
TL;DR: In this paper, Ru/HAP has been identified as a suitable support for Ru in the conversion of aqueous levulinic acid (LA) at ambient pressure, and it has been shown that Ru supported on SO 4 2−_ HAP demonstrated selective dehydration of LA to α-angelica lactone.
References
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Journal ArticleDOI
Hydrotalcite-type anionic clays: Preparation, properties and applications.
Journal ArticleDOI
Clays and catalysis: a promising future
TL;DR: The main properties of cationic and anionic clays as well as their role in catalysis are discussed in this paper in light of the versatility and potential of these materials, which may be very useful tools in the move towards establishing environmentally friendly technologies.
Journal ArticleDOI
The nature of the thermal decomposition of a catalytically active anionic clay mineral
TL;DR: In this article, the changes which take place during heat activation of hydrotalcite have been studied by 27Al nuclear magnetic resonance-magic angle spinning, Auger and XPS spectroscopy, transmission electron microscopy, and high resolution nitrogen desorption techniques.
Journal ArticleDOI
Catalysis by hydrotalcites and related materials
Didier Tichit,Bernard Coq +1 more
TL;DR: In this paper, the authors consider the use of layered double hydroxides (LDH) as precursors of multicomponent nanostructured catalysts, whose metal support interaction and cooperation can be fine-tuned.
Book ChapterDOI
Oscillatory Catalytic Reactions at Single-Crystal Surfaces
TL;DR: In this article, the authors focused on the oscillatory catalytic reactions at single-crystal surfaces and explored the elementary steps underlying the complex temporal and spatial effects in fair detail, which information, in turn, could be used for theoretical modeling.
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