Energy transfer, proton transfer and electron transfer reactions within zeolites

Ramamurthy, V.; Lakshminarasimhan, P.; Grey, Clare P.; Johnston, Linda J.

doi:10.1039/a803871f

Cited by 127 publications

(111 citation statements)

References 59 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…[15] In this case, however, only a small amount of mixed monoterpenes and pcymene were exacted out in CH 2 Cl 2 as products for all the three substrates, most of the substrates were probably cracked inside the zeolite framework.…”

mentioning

confidence: 95%

Y‐Zeolite‐Catalyzed Cyclizations of Terpenols

Bian

Gao

et al. 2006

Adv Synth Catal

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 95%

Y‐Zeolite‐Catalyzed Cyclizations of Terpenols

Bian

Gao

et al. 2006

Adv Synth Catal

View full text Add to dashboard Cite

show abstract

“…15 Only cations located on sites II and III are expected to be readily accessible for organic molecules adsorbed within a supercage. 2,16 On the other hand, cations in the sodalite cages have an effect on the total electrostatic field in the zeolite. Furthermore, the number of Brönsted acid sites varies with cation type; while zeolite NaY can be prepared free of acid sites, this is difficult for fully exchanged CaY zeolite.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ca²⁺ Position in Zeolite Y on Selective Oxidation of Propane at Room Temperature

Mojet

Ommen

et al. 2004

J. Phys. Chem. B

View full text Add to dashboard Cite

The activity of CaNaY zeolites in selective oxidation of propane with increasing Ca 2+ content at room temperature was studied with infrared spectroscopy and ammonia temperature-programmed desorption. Increasing the Ca 2+ exchange level in CaNaY zeolites resulted in a variety of altered properties: the amount of Brönsted and Lewis acid sites increased, the adsorption of propane increased, the initial acetone formation rate increased, and the desorption of acetone retarded. Moreover, all of these properties showed a sudden change with Ca 2+ content above the 50% Na + exchange level, which can be fully attributed to the location of Ca 2+ in the Y-zeolite framework. It is convincingly shown that only Ca 2+ ions located in the supercage contribute to the formation of Brönsted and Lewis acidity as well as propane oxidation activity at room temperature.

show abstract

“…Additionally, Cs -exchanged zeolites are richer in electrons than the Na or Li counterparts, and as a result, bleaching of a dye such as thionin by electron transfer occurs more readily in a Cs zeolite. [49,50] Zeolites exchanged with divalent cations such as Ca 2 or Mg 2 are not suitable as host materials since cation hydrolysis leads to Brˆnsted acidity in the material. [49,50] This acidity may not only result in protonation of the dye, but also in other complications, such as rearrangement of alkenes before the photo-oxygenation, and decomposition of the hydroperoxide products.…”

Section: Thionin and Methylene Bluementioning

confidence: 99%