design of efficient transition metal complex catalysts

... present a method to design prototype filters of oversampling uniform complex-modulated FIR filter bank pairs Especially, we present a noniterative two-step procedure: (i) design of analysis prototype ... properties of oversampling uniform complex-modulated FIR filter bank pairs in order to achieve the lowest possible filter bank delay An illustrative design example demonstrates the potential of the design ... the first design step this procedure is used either for the design of the SFB or the AFB prototype filter (3) For the second and final design step (cf.Section 4), we use the deviation of the FBP...

Ngày tải lên: 21/06/2014, 19:20

... to thank Professor Kian-Lee Tan at National University ofSingapore, Professor Divyakant Agrawal at University of California, Santa Barbara andProfessor M Tamer Ozsu at University of Waterloo ... robustness of the system Thesis Supervisor: Prof Ooi Beng Chin Title: Professor of Computer Science at NUS Trang 9Table of Contents1.1 Database Applications in the Cloud 1 1.1.1 Challenges of Deploying ... of my studies Iwould like to dedicate this thesis to them Trang 6Design of Efficient and Elastic Storage in the Cloudby Vo Hoang TamSubmitted to the School of Computing in partial fulfillment of...

Ngày tải lên: 09/09/2015, 10:18

... bond lengths and angles of 1 and 2 are compared in Table 1 The atomic labeling scheme of the palladium complex has been adopted from that of the nickel complex Both metal ions are coordinated ... value of 21.1 M While the rhenium complex 4 exhibits a stronger antiproliferative effect (IC50 = 5.52 M), the nickel, palladium and platinum complexes are almost inactive Keywords: Transition Metals, ... –rhenium complexes, which resulted in stable, neutral TcVN and ReVN complexes 13 With respect to the stability of these products, H2L should also be suitable for the coordination of other metal...

Ngày tải lên: 12/12/2017, 06:47

... description of the design procedure used in this paper, for the design of low complexity 2D VCF filters The design methodology involves – the design of continuous coefficient 1D VCF filters, CSD encoding of ... the mini-mal number of signed power of two (SPT) terms The design of 1D filter in discrete space degrades the overall performance of the filters, which necessitates the use of some nonlinear opti-mization ... the design of continuous coefficient 1D VDF are explained in Sections ‘‘Problem statement” and ‘‘Design of 1D continu-ous coefficient variable digital filters”, respectively Sec-tion ‘‘Design of...

Ngày tải lên: 13/01/2020, 12:15

... XRD patterns of Cu(II), Ni(II), and Zn(II) complexes of ligand 1 were studied in order to test the degree of crystallinity of the complexes. from diffraction of X-ray by the planes of complex The ... moles of cupric oxide In the thermogram of the Ni(II) complex, the first stage of decomposition represents the weight loss of corresponds to 2 moles of nickel oxide In the case of Zn(II) complex, ... ESI-mass spectrum of Cu(II) complex (1a). The electronic spectra of the Ni(II) complexes of ligands 1 and 2 displayed 2 bands each at 710.0 2.5 ESR spectral studies of the Cu(II) complexes of ligands...

Ngày tải lên: 12/01/2022, 22:51

... Trang 1DESIGN AND APPLICATIONS OF PHOSPHINE LIGANDS TO TRANSITION METAL-CATALYZED REACTIONS JIANG CHUNHUI NATIONAL UNIVERSITY OF SINGAPORE 2014 Trang 3DESIGN AND APPLICATIONS OF PHOSPHINE ... Summary vi List of Tables viii List of Figures ix List of Schemes x List of Abbreviations xiv List of Publications xvii Chapter 1 Introduction 1 1.1 Historical background of asymmetric ... results of their applications in different transition-metal-catalyzed asymmetric reactions Chapter 1 gave a brief historical background of asymmetric palladium catalysis The Inventions of three...

Ngày tải lên: 09/09/2015, 09:59

... Trang 1AL UNIVvel metal c plications Wang Tao or: A/P T VERSITY complex-p in bio-im o anja Wei Y OF SIN protein co maging Trang 2Design and Synthesis of novel metal complex-protein conjugation ... 1.5.2 Reduction of Disulfides and Disulfide Site-specific Intercalation 14 1.6 Design of biocompatible metal-complex protein conjugate 16 Trang 5Table of Contents 3.1 Synthesis of 1, 4, 7-tris ... 41 4.8 Synthesis of Folate-DOTA (13) 42 4.10 Synthesis of Mannich Salt (14) 46 4.11 Synthesis of Bis-disulfide (15) 47 4.12 Synthesis of Bis-sulfone (16) 48 4.13 Synthesis of Bromoethyl-bis-sulfide...

Ngày tải lên: 16/10/2015, 11:57

... key Project of Department of Education of Guangdong Province (2016GCZX008), the key Research Platform Project of Department of Education of Guangdong Province (cgg041002), the Project of Engineering ... on the use of nonprecious metals is still open for both hydroamination and C-N formations Soon intensive work will focus not only on new metal-organic design in the solid state, i.e metal-organic ... reaction of hydroamination has been one of the hot-spots in the research of organic synthesis [21] In order to further enrich the kinds of nitrogenous compounds, chemists synthesized a variety of multifunctional...

Ngày tải lên: 29/05/2020, 13:49

... Research Design of a complex virtual reality simulation to train finger motion for persons with hemiparesis: a proof of concept study Address: 1 New Jersey Institute of Technology, Department of Biomedical ... study of this concept in much greater depth The utilization of haptics to train individual fingers is a newer area of study The combination of selective inhibi-tion of abnormal finger flexion offered ... inhibition of only the inactive fingers Conclusion The design of suitable VR hand simulations are challeng-ing due to the complexity of human hand function How-ever, this is a crucial area in need of...

Ngày tải lên: 19/06/2014, 08:20

... Overview of transition metal (W, Mo) oxides and their electrochromic properties 1.1 Introduction of transition metal In chemistry, the term transition metal (sometimes also called a transition ... be the onset of the metal - semiconductor transition at the very end of metallic behavior of much smaller particles The size at which the transition occurs depends on the type of metal and criterion ... Trang 2Chapter 1 Overview of transition metal (W, Mo) oxides and their electrochromic properties 2 1.1 Introduction of transition metal 2 1.2 Bulk crystalline structures of tungsten oxide and...

Ngày tải lên: 25/03/2015, 11:58

... Properties of Group 11 transition metals Because of the relatively high cost of group 11 metals, they are often supported on a carrier in order to utilize the atoms more efficiently The preparation of ... deposition of the active metal on the surface of the solid, strategies of encapsulation of the metal into the micro-meso-porous hosts such as metal oxides and metal organic framework (MOF) have ... Figure 4-5 (a) Silver loading of Ag/Al2O3 catalysts on N-alkylation of aniline by benzyl alcohol TOF values for the conversion of aniline given as the ratio of moles of aniline per mole Ag per hour...

Ngày tải lên: 09/09/2015, 10:14

... Understanding and Design of SupportedMetal Heterogeneous Nanocatalysts MIAO ZHOU (B.Sc., Chongqing University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF PHYSICS NATIONAL ... adsorption energies of various kinds of metal clusters on graphene, which is highly desired for the durability of catalysts in practical tions The charging state of those clusters can be efficiently ... towards supported metal nanocatalysts 74 5.1 Introduction 74 5.2 Results and discussion 76 5.2.1 Anchoring of metal clusters by a single carbon vacancy 76 5.2.2 Activation of metal clusters...

Ngày tải lên: 09/09/2015, 10:15

... Trang 1EFFICIENT WIRELESS SYSTEMSWANG PEIJIE NATIONAL UNIVERSITY OF SINGAPORE 2011 Trang 2DESIGN AND PERFORMANCE ANALYSIS OFEFFICIENT WIRELESS SYSTEMS WANG PEIJIE (M.Sc., National University of Singapore) ... power-adaptivetransmission system for fading channels is designed to adapt the transmitted power to match the current state of the channel Most of the works on the design oranalysis of power-adaptive transmission systems ... exploiting the lowprobability of concurrence of deep fades in all the diversity channels, the reliability of the end-to-end transmission is enhanced This kind of diversity is of particularinterest as...

Ngày tải lên: 10/09/2015, 08:25

... Au(I) and Rh(I) complexes of indazolin-3-ylidenes 72 5.1 Synthesis of ligand precursors 72 5.2 Synthesis of transition metal complexes 73 5.3 Evaluation of donor strength of indazolin-3-ylidene ... structure of complex 1b·0.5Et2O 25 Figure 2.2 Molecular structure of complex 2a 27 Figure 2.3 Molecular structure of complex 3a·2CH3CN 29 Figure 2.4 Molecular structure of complex 3b·2CH3CN·H2O ... Molecular structure of complex 4 33 Figure 3.2 Molecular structure of complex 6 37 Trang 14Figure 3.3 Molecular structure of complex 7 39 Figure 3.4 Molecular structure of complex 9·2CH2Cl2...

Ngày tải lên: 11/09/2015, 10:04

... hand, use of palladium complexes with hybrid ligands towards catalytic additions of arylboronic acids to aldehydes is not known It is therefore of our interest to investigate the efficacy of our ... with the metals as it could perform dual function, viz monodentate and chelating Table 5.6: Effect of metal precursor towards 1,2 –addition of phenylboronic acid to benzaldehyde.a Entry Metal ... h (Figure 5.4) in the presence of dba The ability of dba to keep the metal (in form of C11) in solution is apparent.158 Upon prolonged stirring in the absence of dba, C12a converts to {{η-C5H4CH=N[CH3(CH)C10H7]}Fe[η-C5H4P(t-Bu)2]Pd(I)(C6F5)}2,...

Ngày tải lên: 11/09/2015, 10:18

... 21homogeneous catalysts are metal complexes that are soluble in the reaction medium Such metal complexes consist of a central metal ion and organic ligands The activity and selectivity of homogeneous catalysts ... Physicochemical properties of bimetallic Ru-Cu catalysts Table 5.2 The chemisorption results of the catalysts Chapter 6 Table 6.1 Physicochemical properties of Ru catalysts Table 6.2 Metallic dispersions ... CHARACTERIZATION OF NEW METAL-CARBON CATALYSTS FOR HYDROGENATION OF D-GLUCOSE LIU JIAJIA NATIONAL UNIVERSITY OF SINGAPORE 2010 Trang 2SYNTHESIS AND CHARACTERIZATION OF NEW METAL-CARBON CATALYSTS...

Ngày tải lên: 11/09/2015, 10:18

... Introduction ··· 1 Chapter 2 First Principles Based Design of Metal Catalysts ··· 5 2.1 Introduction ··· 5 2.2 Models of Catalytic Surface ··· 6 2.3 Hydrogenation of Olefins and Aromatics ··· 8 2.4 Ammonia ... 4.3.5 Stability of Graphene Overlayer on Ni(111)··· 61 4.3.6 Chemisorption of Carbon at the Ni(211) steps··· 63 4.4 Kinetics of Formation of Subsurface and Bulk Carbon, and of Graphene Islands ... molecular level understanding of the coking mechanism on Ni catalysts, the stability of different forms of carbon that can exist on Ni catalyst and the kinetics of carbon diffusion were studied...

Ngày tải lên: 11/09/2015, 16:06

... increasingly for the design of novel/improved catalysts, such as steam reforming and ammonia synthesis catalysts (Hinneman and Nørskov, 2003; Zhang and Hu, 2002) Transition metal catalysts such as ... and shown to Trang 3improve the stability of Ni catalysts The objective of this thesis is to design a promoter to enhance the stability of Ni-based catalysts Thermodynamic and kinetic calculations ... given of the the-art in first principles based design of metal catalysts In chapter 3, the theory and the computational methods used in this work are discussed In chapter 4, the stability of different...

Ngày tải lên: 11/09/2015, 16:06

... 4.4 Cutoff frequencies of H1(z), H2(z) and H3(z) 73 4.5 Influence of the transition bandwidth 81 4.6 Comparison of the three different filter banks 87 5.1 Comparison of different design ... complexity of IFIR filters can be further reduced by employing efficient gorithms in the design A low complexity design was realized by using Remezmultiple exchange algorithm iteratively to design ... 5.5 Illustration of the process to determine the band-edges of H ma (z) for Case A design 101 5.6 Illustration of the process to determine the band-edges of H mc (z) for Case A design 1055.7...

Ngày tải lên: 12/09/2015, 08:19

... binary phase diagram of the metal component of the targeted nanostructure and the catalyst metal The diameter of the as grown structures is largely determined by the size of the metal droplet For ... properties of metal oxides nanostructures Table 3.1 XPS data of heated Nb foils in the presence of oxygen at different temperatures Trang 12LIST OF FIGURES Figure 1.1 Potential energy diagram of electrons ... image of the cobalt foil with nanowires after 5 minutes of growth and (d) SEM image of the same region of the foil taken after a subsequent 5 minutes of growth (e) a typical TEM image of the...

Ngày tải lên: 14/09/2015, 14:11