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Volumn 136, Issue 50, 2014, Pages 17601-17615

Nucleation is second order: An apparent kinetically effective nucleus of two for Ir(0)n nanoparticle formation from [(1,5-COD)IrI·P2W15Nb3O62]8- plus hydrogen

Author keywords

[No Author keywords available]

Indexed keywords

CATALYSTS; KINETICS; NANOPARTICLES; NIOBIUM; NUCLEATION; PARTICLE SIZE; RATE CONSTANTS;

EID: 84919343719     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja510263s     Document Type: Article
Times cited : (53)

References (79)
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    • Moore, J. W.; Pearson, R. G. Kinetics and Mechanism, 3 rd ed.; Wiley-Interscience: New York, 1981; p 226, Table 6.8.
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    • CNT is also stated to be incompatible with the growing evidence for so-called "prenucleation" clusters,(22b) although the needed kinetic evidence, to know where such observable clusters actually fit into the true mechanism of nucleation of crystallizing systems, is lacking at present
    • CNT is also stated to be incompatible with the growing evidence for so-called "prenucleation" clusters,(22b) although the needed kinetic evidence, to know where such observable clusters actually fit into the true mechanism of nucleation of crystallizing systems, is lacking at present.
  • 29
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    • x equilibrium in determining if a reaction is catalyzed by a homogeneous vs a heterogeneous catalyst: Widegren, J. A.; Finke, R. G. J. Mol. Catal. A.: Chemical 2003, 198, 317-341 see the last bullet point on p. 334
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    • Widegren, J.A.1    Finke, R.G.2
  • 30
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    • 2 but reverses under ethylene, although the ligating effects of the zeolite Y support are presumably significant in this heterogeneous catalyst system, see: Uzun, A.; Gates, B. C. J. Am. Chem. Soc. 2009, 131, 15887-15894
    • (2009) J. Am. Chem. Soc. , vol.131 , pp. 15887-15894
    • Uzun, A.1    Gates, B.C.2
  • 34
    • 85067750813 scopus 로고    scopus 로고
    • The concept of pseudo-elementary steps was introduced in the 1970s by Noyes, who developed this concept using kinetic studies of complex oscillating reactions. By pseudo-elementary we mean collections of one or more slow steps, plus any number of faster steps, that when added together yield a balanced reaction that can be uses as effectively elementary (i.e., as pseudo-elementary) for the purposes of kinetic treatments in the same way that truly elementary steps are used as the basic building blocks of reliable reaction mechanisms. That said, the reaction order of a pseudo-elementary step cannot be directly used to imply the molecularity of that (composite) step as is the case with a true elementary step.
    • The concept of pseudo-elementary steps was introduced in the 1970s by Noyes, who developed this concept using kinetic studies of complex oscillating reactions. By pseudo-elementary we mean collections of one or more slow steps, plus any number of faster steps, that when added together yield a balanced reaction that can be uses as effectively elementary (i.e., as pseudo-elementary) for the purposes of kinetic treatments in the same way that truly elementary steps are used as the basic building blocks of reliable reaction mechanisms. That said, the reaction order of a pseudo-elementary step cannot be directly used to imply the molecularity of that (composite) step as is the case with a true elementary step.
  • 37
    • 84893731706 scopus 로고    scopus 로고
    • Kent, P. D.; Mondloch, J. E.; Finke, R. G. J. Am. Chem. Soc. 2014, 136, 1930-1941 see the section on "Limitations of the Four-Step Mechanism", and refs 24, 27-30 and 31 listed therein
    • (2014) J. Am. Chem. Soc. , vol.136 , pp. 1930-1941
    • Kent, P.D.1    Mondloch, J.E.2    Finke, R.G.3
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    • Zhang, R. Science 2010, 328, 1366-1367
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    • Platt, J. R. Science 1964, 146, 347-353
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    • Stryer makes a comment on p. 593 based on his results and earlier results of others regarding nucleation, a comment that strikes a cord in light of our current second-order nucleation studies, ".the pre-equilibrium assumption is highly suspect⋯". "Why was this not discovered earlier?"
    • Goldstein, R. F.; Stryer, L. Biophys. J. 1986, 50, 583-599 Stryer makes a comment on p. 593 based on his results and earlier results of others regarding nucleation, a comment that strikes a cord in light of our current second-order nucleation studies, "...the pre-equilibrium assumption is highly suspect⋯". "Why was this not discovered earlier?"
    • (1986) Biophys. J. , vol.50 , pp. 583-599
    • Goldstein, R.F.1    Stryer, L.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.