Ethylene Trimerization with Cr−PNP and Cr−SNS Complexes:  Effect of Ligand Structure, Metal Oxidation State, and Role of Activator on Catalysis

2006 ◽  
Vol 25 (15) ◽  
pp. 3605-3610 ◽  
Author(s):  
David S. McGuinness ◽  
David B. Brown ◽  
Robert P. Tooze ◽  
Fiona M. Hess ◽  
John T. Dixon ◽  
...  
Keyword(s):  
Oxidation State ◽  
Metal Oxidation ◽  
Ligand Structure ◽  
Ethylene Trimerization

New Insight into the Role of the Metal Oxidation State in Controlling the Selectivity of the Cr-(SNS) Ethylene Trimerization Catalyst

2007 ◽  
Vol 26 (18) ◽  
pp. 4598-4603 ◽  
Author(s):  
Claire N. Temple ◽  
Sandro Gambarotta ◽  
Ilia Korobkov ◽  
Robbert Duchateau
Keyword(s):  
Oxidation State ◽  
Metal Oxidation ◽  
Ethylene Trimerization ◽  
Insight Into

Role of the Metal Oxidation State in the SNS−Cr Catalyst for Ethylene Trimerization:  Isolation of Di- and Trivalent Cationic Intermediates

2006 ◽  
Vol 128 (28) ◽  
pp. 9238-9247 ◽  
Author(s):  
Amir Jabri ◽  
Claire Temple ◽  
Patrick Crewdson ◽  
Sandro Gambarotta ◽  
Ilia Korobkov ◽  
...  
Keyword(s):  
Oxidation State ◽  
Metal Oxidation ◽  
Ethylene Trimerization

Isolation of Single-Component Trimerization and Polymerization Chromium Catalysts: The Role of the Metal Oxidation State

2008 ◽  
Vol 47 (50) ◽  
pp. 9717-9721 ◽  
Author(s):  
Amir Jabri ◽  
Chris B. Mason ◽  
Yan Sim ◽  
Sandro Gambarotta ◽  
Tara J. Burchell ◽  
...  
Keyword(s):  
Oxidation State ◽  
Single Component ◽  
Metal Oxidation ◽  
Chromium Catalysts

Investigating the role of metal oxidation state on the degradation behaviour of LDPE

2009 ◽  
Vol 94 (7) ◽  
pp. 1033-1039 ◽  
Author(s):  
P.K. Roy ◽  
P. Surekha ◽  
R. Raman ◽  
C. Rajagopal
Keyword(s):  
Oxidation State ◽  
Metal Oxidation ◽  
Degradation Behaviour

Isolation of Single-Component Trimerization and Polymerization Chromium Catalysts: The Role of the Metal Oxidation State

2008 ◽  
Vol 120 (50) ◽  
pp. 9863-9867 ◽  
Author(s):  
Amir Jabri ◽  
Chris B. Mason ◽  
Yan Sim ◽  
Sandro Gambarotta ◽  
Tara J. Burchell ◽  
...  
Keyword(s):  
Oxidation State ◽  
Single Component ◽  
Metal Oxidation ◽  
Chromium Catalysts

scholarly journals Role of carboxylate ion and metal oxidation state on the morphology and magnetic properties of nanostructured metal carboxylates and their decomposition products

2008 ◽  
Vol 120 (6) ◽  
pp. 521-528 ◽  
Author(s):  
Aparna Ganguly ◽  
Rituparna Kundu ◽  
Kandalam V. Ramanujachary ◽  
Samuel E. Lofland ◽  
Dipankar Das ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Oxidation State ◽  
Metal Oxidation ◽  
Metal Carboxylates ◽  
Decomposition Products ◽  
Nanostructured Metal

scholarly journals Adhesion and Atomic Structures of Gold on Ceria Nanostructures: The Role of Surface Structure and Oxidation State of Ceria Supports

Nano Letters ◽  
2015 ◽  
Vol 15 (8) ◽  
pp. 5375-5381 ◽  
Author(s):  
Yuyuan Lin ◽  
Zili Wu ◽  
Jianguo Wen ◽  
Kunlun Ding ◽  
Xiaoyun Yang ◽  
...  
Keyword(s):  
Surface Structure ◽  
Oxidation State ◽  
Atomic Structures

Enhanced photocatalytic activity of BiVO4/Pt/PtOx photocatalyst: the role of Pt oxidation state

2021 ◽  
pp. 150773
Author(s):  
Luiz E. Gomes ◽  
Adailton C. Nogueira ◽  
Marcio F. da Silva ◽  
Luiz F. Plaça ◽  
Lauro J.Q. Maia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Oxidation State

scholarly journals Two-Dimensional, Hierarchical Ag-Doped TiO2 Nanocatalysts: Effect of the Metal Oxidation State on the Photocatalytic Properties

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 2579-2587 ◽  
Author(s):  
Siti Khatijah Md Saad ◽  
Akrajas Ali Umar ◽  
Marjoni Imamora Ali Umar ◽  
Masahiko Tomitori ◽  
Mohd. Yusri Abd. Rahman ◽  
...  
Keyword(s):  
Oxidation State ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Metal Oxidation ◽  
Doped Tio2

Synthesis and characterisation of transition metal substituted barium hollandite ceramics

2006 ◽  
Vol 932 ◽  
Author(s):  
Neil C. Hyatt ◽  
Martin C. Stennett ◽  
Steven G. Fiddy ◽  
Jayne S. Wellings ◽  
Sian S. Dutton ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxidation State ◽  
Powder Diffraction ◽  
Single Phase ◽  
Maximum Density ◽  
Processing Conditions ◽  
Metal Oxidation ◽  
Exafs Data ◽  
X Ray ◽  
Oxygen Atoms

ABSTRACTA range of transition metal bearing hollandite phases, formulated Ba1.2B1.2Ti6.8O16 (B2+ = Mg, Co, Ni, Zn, Mn) and Ba1.2B2.4Ti5.6O16 (B3+ = Al, Cr, Fe) were prepared using an alkoxide - nitrate route. X-ray powder diffraction demonstrated the synthesis of single phase materials for all compositions except B = Mn. The processing conditions required to produce > 95 % dense ceramics were determined for all compositions, except B = Mg for which the maximum density obtained was > 93 %. Analysis of transition metal K-edge XANES data confirmed the presence of the targeted transition metal oxidation state for all compositions except B = Mn, where the overall oxidation state was found to be Mn3+. The K-edge EXAFS data of Ba1.2B1.2Ti6.8O16 (B = Ni and Co) were successfully analysed using a crystallographic model of the hollandite structure, with six oxygen atoms present in the first co-ordination shell at a distance of ca. 2.02Å. Analysis of Fe K-edge EXAFS data of Ba1.2B2.4Ti5.4O16 revealed a reduced co-ordination shell of five oxygens at ca. 1.99Å.

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