Influence of nitrogen on the catalytic behaviour of Pt/γ-Al2O3 catalyst in glycerol reforming process

Luo, Nianjun; Wang, Jinan; Xiao, Tiancun; Cao, Fahai; Fang, Dingye

doi:10.1016/j.cattod.2010.04.013

Cited by 14 publications

(12 citation statements)

References 27 publications

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“…The solid base catalysts, except MgO, showed reasonable GC yield under mild reaction conditions. The activity of present catalyst is comparable to KF/HAP and better than other reported heterogeneous catalysts [18,20,32]. These results indicate that NaOH/γ-Al 2 O 3 is a promising candidate to replace homogeneous catalysts for the synthesis of GC from glycerol and DMC via transesterification reaction.…”

Section: Comparison Of the Catalytic Activity Of Naoh/γ-al 2 O 3 Withsupporting

confidence: 65%

“…Generally, γ-Al 2 O 3 is commonly used as a heterogeneous catalyst or support due to its textural properties and good availability [18][19][20]. As reported previously, γ-Al 2 O 3 loaded with other active components can also be used as a solid base catalyst to catalyze the synthesis of organic carbonate via transesterification and Claisen Schmidt condensation reaction [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by NaOH/γ-Al2O3

Bai

Wang

et al. 2013

Fuel Processing Technology

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Section: Comparison Of the Catalytic Activity Of Naoh/γ-al 2 O 3 Withsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by NaOH/γ-Al2O3

Bai

Wang

et al. 2013

Fuel Processing Technology

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“…An acidic support has a function in catalyzing side reactions like dehydration and condensation. For example, on the Pt/Al 2 O 3 and Ru/La 2 O 3 catalysts, coke was easily formed owing to side reactions (71,99). Increasing reaction temperatures enhanced the overall reforming reaction, but it also increased the tendency towards side reactions.…”

Section: Supported Pt Rh and Ru Catalystsmentioning

confidence: 97%

Recent Advances in Catalytic Conversion of Glycerol

Zhou¹,

Zhao²,

Tong³

et al. 2013

Catalysis Reviews

177

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The article underlines and discusses the state-of-the-art accomplishments in the catalytic conversion of glycerol (1,2,3-propanetriol) to fuels and value-added chemicals in the past five years (2008)(2009)(2010)(2011)(2012). The reactions include steam reforming, aqueous-phase reforming, hydrogenolysis, oxidation, dehydration, esterification, etherification, carboxylation, acetalization, and chlorination. Typical products are hydrogen, propanediols, dihydroxyacetone, glyceric acid, acrolein, glyceride, polyglycerol, glycerol carbonate, acetals, ketals, and epichlorohydrine. Recent studies on the catalysts, reaction conditions, and possible pathways are primarily discussed. They indicate that major breakthroughs are achieved by the use of multifunctional catalysts, process intensification and integrated reactions. Literature survey suggests that future work on the catalytic conversion of glycerol for commercial goals particularly requires new catalysts, innovative reactor engineering, and close multidisciplinary partnership.

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“…In relation to the used catalyst, both of them showed a decrease in the surface area (Table 1). During steam reforming, coke is usually formed over the catalyst leading to a decrease in the specific area of the catalyst and, in most of cases, being the main reason for the deactivation of the catalyst [42,43]. On the other hand, Figure 4 shows the XRD patterns of used catalysts; they exhibited new diffraction lines compared to the fresh one.…”

Section: Al2o3mentioning

confidence: 99%

Lanthanum Effect on Ni/Al2O3 as a Catalyst Applied in Steam Reforming of Glycerol for Hydrogen Production

et al. 2019

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Nowadays, the massive production of biodiesel leads to a surplus of glycerol. Thus, new applications of this by-product are being developed. In this study, glycerol steam reforming was carried out with Ni catalysts supported on Al2O3 rings and La-modified Al2O3. The catalysts were characterized by N2 physical adsorption, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and thermogravimetry. Both catalysts were effective in glycerol steam reforming. However, Ni/Al2O3 activity decreased over reaction time. Ni/La2O3/Al2O3 showed the best stability during the reaction. In addition, the activity of the modified support, La2O3/Al2O3, was evaluated. The modification of the support lent catalytic properties to the solid. Some conditions such as catalyst arrangement (catalyst in the first or second reactor), space velocity, and reaction temperature were studied. The highest hydrogen production was obtained when half the amount of the catalyst was located in both reactors. Glycerol conversion into gases was similar, regardless the space velocity, although higher amounts of H2 were obtained when this variable decreased. Complete glycerol conversion into gases was obtained at 900 and 1000 °C, and hydrogen production reached a H2/glycerol molar ratio of 5.6. Finally, the presence of the catalyst and the optimization of these conditions increased the energy capacity of the produced stream.

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Influence of nitrogen on the catalytic behaviour of Pt/γ-Al2O3 catalyst in glycerol reforming process

Cited by 14 publications

References 27 publications

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by NaOH/γ-Al2O3

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by NaOH/γ-Al2O3

Recent Advances in Catalytic Conversion of Glycerol

Lanthanum Effect on Ni/Al2O3 as a Catalyst Applied in Steam Reforming of Glycerol for Hydrogen Production

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