Exchange of Deuterium with the Hydroxyl Groups of Alumina

Carter, J. L.; Lucchesi, P. J.; Corneil, P.; Yates, David J.; Sinfelt, J. H.

doi:10.1021/j100893a042

Cited by 96 publications

(34 citation statements)

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“…generated by pentacoordinated adsorption. Although the H/D isotope exchange between hydroxyl groups of the acid catalyst and the gaseous H 2 (D 2 ) has been observed [22][23][24], there is a lack of other definite experiment results to prove the deduction of Bauer. Here, our results prove that with pure ZSM-5 as catalyst the hydrogen has a similar catalytic behavior as the spilt-over hydrogen on Pt/H-ZSM-5, which is an evidence for the proposal that H 2 can be activated on pure zeolite and act as spilt-over hydrogen.…”

Section: Resultsmentioning

confidence: 99%

The Effect of H2 on Chichibabin Condensation Catalyzed by Pure ZSM-5 and Pt/ZSM-5 for Pyridine and 3-Picoline Synthesis

Jin

2009

Catal Lett

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The effects of H 2 in the feed gasses on the Chichibabin condensation of ammonia with formaldehyde and acetaldehyde for pyridine and 3-picolines synthesis were studied in this work. It was observed that over Pt/ZSM-5 and H-ZSM-5 catalyst hydrogen can moderate the deactivation, depressed the coke formation, slightly lower the initial yield of pyridine bases and increase the selectivity of pyridine over 3-picoline. These effects cannot be simply attributed to the reactant dilution by H 2 , while are similar as those of spilt-over hydrogen on a Pt/ZSM-5 catalyst on this reaction. These phenomena are taken as the evidence to support the hypothesis that molecular H 2 is activated by the pure zeolite during the Chichibabin condensation.

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Section: Resultsmentioning

confidence: 99%

The Effect of H2 on Chichibabin Condensation Catalyzed by Pure ZSM-5 and Pt/ZSM-5 for Pyridine and 3-Picoline Synthesis

Jin

2009

Catal Lett

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“…The presence of hydroxyl groups in the surface has been shown by deuterium exchange and infrared spectroscopy (Peri and Hannan 1967;Peri 1965;Carter et al . 1965;Dunken and Fink 1966) and by chemical methods (Boehm 1966).…”

Section: (2a) Atomistic Models Of Crystal Surfacesmentioning

confidence: 99%

Atomistic Simulation of Interfaces in Materials: Theory and Applications

Yarovsky¹

1997

Aust. J. Phys.

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The theoretical background, methodology and some applications of atomistic simulation of interfaces in materials are described in this paper. Interfaces between crystalline solids and polymers as well as between two polymers can be simulated using the methods described. Applications include various interfaces in a multilayered coated metal system. The methodology enables such properties as the work of adhesion, interfacial stability, degree of curing in polymers and permeability to small molecules to be predicted. In addition, interfacial structure and molecular mechanisms of adhesion and barrier performance of coatings can be revealed.

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“…Hall and Lutinski [4] and Carter et al [5] have studied the exchange of D 2 with the OH groups of Pt/Al 2 O 3 . A similar study over Rh/Al 2 O 3 was reported by Cavanagh and Yates, who followed the H/D exchange by IR spectroscopy [6].…”

Section: Introductionmentioning

confidence: 99%