Synthesis, Structure and Catalytic Activity of ... - Jacobs University

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Fig. 3.8 Thermogram of K-2 58 Fig. 3.9 Thermogram of Rb,K,Na-3 59 Fig. 3.10 Thermogram of K,Na-4 59 Fig. 3.11 183 W-NMR spectrum of Rb,K,Na-3 dissolved in 1M lithium acetate buffer pH 4.8 60 Fig. 3.12 Infra red spectra of the POM precursor {PW 9} and the product (K,Na-5) 64 Fig. 3.13 Polyhedral/ball and stick representation of [P 2W 18Ti 8O 76- (H 2O) 4(C 2O 4) 8] 18- 66 Fig. 3.14 Polyhedral representation of one monomer of [P 2W 18Ti 8O 76- (H 2O) 4(C 2O 4) 8] 18- (5) and [(TiO 3(H 2O) 3)(Ti 3GeW 9O 37OH) 3] 17- (3) 67 Fig. 3.15 Thermogram of K,Na-5 68 Fig. 3.16 31 P-NMR spectrum of K,Na-5 dissolved in water/D 2O 69 Fig. 3.17 31 P-NMR spectrum of K,Na-5 dissolved in lithium acetate/D 2O 70 Fig. 3.18 IR spectra of {As 2W 19} precursor and K-6 73 Fig. 3.19 IR spectra of {AsW 9} precursor and Rb,K,Na-7 74 Fig. 3.20 Ball and stick representation of [As 2W 18Ti 2(C 2O 4) 2O 66] 14- , 6 in the side view and a polyhedral representation of 6 in the front view 76 Fig. 3.21 Polyhedral representation of a side view of [As 2W 18Ti 2(C 2O 4) 8- (H 2O) 2O 75] 20- , 7 77 Fig. 3.22 Polyhedral representation of a top view of [As 2W 18Ti 2(C 2O 4) 8- (H 2O) 2O 75] 20- , 7 78 xii
Fig. 3.23 Ball and stick representation of the eight titanium atoms of Rb,K,Na-7 79 Fig. 3.24 Polyhedral representation of one monomer of [P 2W 18Ti 8O 76- (H 2O) 4(C 2O 4) 8] 18- (5) and [(TiO 3(H 2O) 3)(Ti 3GeW 9O 37OH) 3] 17- (7) 80 Fig. 3.25 Thermogram of K-6 81 Fig. 3.26 Thermogram of Rb,K,Na-7 82 Fig. 3.27 Infra red spectra of the POM precursor {P 2W 12}, the product (K,Li-8) and the byproduct (Ti4) 86 Fig. 3.28 Ball and stick representation of [P 4W 32Ti 6(C 2O 4) 4O 124] 20- (8) showing the two subunits connected to each other by two outer titanium atoms and a potassium ion sitting at the inversion center 88 Fig. 3.29 Polyhedral and Ball and stick representation of one portion of 8 showing one of the {P 2W 16} subunits substituted with two titanium atoms and the two bridging ones 89 Fig. 3.30 Thermogram of K,Li-8 90 Fig. 3.31 31 P-NMR spectrum of K,Li-8 dissolved in 1M LiCl solution at pH1 91 Fig. 3.32 31 P-NMR spectrum of K,Li-8 dissolved in water/D 2O 92 Fig. 3.33 183 W-NMR spectrum of K,Li-8 dissolved in 1M LiCl solution at pH1 93 Fig. 3.34 Ball and stick representation of 9 95 Fig. 3.35 Polyhedral representation of 9 showing the chair confirmation 95 Fig. 3.36 Polyhedral representation of 10 showing the eight disordered titanium atoms with missing oxygens 96 xiii
Page 1 and 2: Synthesis, Structure and Catalytic
Page 3 and 4: Abstract __________________________
Page 5 and 6: Table of Contents _________________
Page 7 and 8: Chapter III Synthetic Results 3.1 G
Page 9 and 10: 4.2.3 Catalytic experiments 121 4.2
Page 11: Fig. 1.16 Polyhedral representation
Page 15 and 16: Codes of Compounds Compound K8[Ti4O
Page 17 and 18: Ch.1 Introduction _________________
Page 53 and 54: Chapter II Experimental Details Cha
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p-xylene conversion (mole %) Ch.4 C
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TEACHING Teaching assistantships in
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Appendix 1. Cyclic Ti9 Keggin Trime
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