2013
DOI: 10.1002/er.3068
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Hydrogen production by partial oxidation of ethanol over Pt/CNT catalysts

Abstract: SUMMARYThe platinum-supported catalysts have been prepared by ethylene glycol reduction method, and the catalysts were applied to the partial oxidation of ethanol (POE) for hydrogen production. Four types of support, including CNTs, Al 2 O 3 , ZrO 2 , and CeO 2 , were used on POE catalytic performance test. Prior to catalyst preparation, the influence of acidic pretreatment on CNTs purity, surface morphology, and pore structure were investigated. The acid-treated CNTs and prepared catalysts were characterized … Show more

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Cited by 7 publications
(5 citation statements)
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References 28 publications
(31 reference statements)
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“…The increase in carbon concentration, and thus reduction in porosity, increases thermal conductivity, and thus the rate of reaction decreases along with the bed and reaction temperature. The reduction in conversion is comparable to values from experimental studies, 33,34 and it does imply that heat transfer directly contributes to reduced reaction rate. Although the decrease in conversion is only gradual with time, the selectivity of hydrogen reduces significantly while that of steam increases.…”
supporting
confidence: 78%
“…The increase in carbon concentration, and thus reduction in porosity, increases thermal conductivity, and thus the rate of reaction decreases along with the bed and reaction temperature. The reduction in conversion is comparable to values from experimental studies, 33,34 and it does imply that heat transfer directly contributes to reduced reaction rate. Although the decrease in conversion is only gradual with time, the selectivity of hydrogen reduces significantly while that of steam increases.…”
supporting
confidence: 78%
“…Different terms were used to denote the two types of catalysts (see Section 1 of Supporting Information). Here Pd was chosen as a parent metal since supported Pd-based metal nanoparticles are known to be active in transformation of methanol to hydrogen, In this Letter, we report that catalysts of cationic, subnanometer bimetallic sites Pd 1 Zn 3 anchored on ZnO (Pd 1 Zn 3 /ZnO) exhibit unprecedented catalytic activity in the generation of H 2 with high selectivity through methanol partial oxidation (MPO). The single dispersion of the subnanometer bimetallic sites Pd 1 Zn 3 was suggested by HAADF-STEM and EXAFS studies.…”
Section: Introductionmentioning
confidence: 99%
“…To demonstrate the distinct difference in catalytic performance between the new type of catalyst, designated as a catalyst of singly dispersed bimetallic sites, a catalyst of isoalted single-atom bimetallic sites, or a catalyst of singly dispersed single-atom bimetallic sites, M 1 A n /X-Z, and a conventional bimetallic nanoparticle catalyst (M-A), here Pt and Zn are chosen for preparing singly dispersed single-atom bimetallic sites, Pt 1 Zn n on a nonmetallic support. Methanol partial oxidation (MPO) producing hydrogen was chosen as a probing reaction since a supported Pt catalyst is active for the methanol partial oxidation. As detailed in the section of Results and Discussion, these cationic, singly dispersed bimetallic sites, Pt 1 Zn 3 exhibit an activity much higher than that of Pt–Zn bimetallic nanoparticles supported on ZnO several hundred times, and a high selectivity of nearly 100% for producing H 2 through methanol partial oxidation. Our computational studies rationalized the difference in catalytic performance between the new type of catalyst, Pt 1 Zn 3 /ZnO and the Pt–Zn bimetallic nanoparticle catalyst by simulations of the reaction pathways of methanol partial oxidation on the two catalysts.…”
Section: Introductionmentioning
confidence: 99%