Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 1

... in the diameter from nm.50, 51 The smaller the particle, the greater will be the fraction of atoms directly in contact with the support and therefore influenced by it, while at the same time the ... calculation on two reaction paths (with or without the direct participation of TiO 2) on Au10/TiO2 (11 0) shows that the direct involvement of the support can enhance the bonding of O2 and reduce the energy ... on supported gold nanoparticle .18 The enhancement of the activity by two order of magnitude was reported by Haruta and coworkers .19 In these cases the participation of surface OH group is often...

Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 2

... which fulfill the Bragg condition 24 n 2d sin where n =1, 2, (2. 3) is the wavelength of the X-ray, d inter-planar spacing of crystal lattice planes, the glancing angle of incidence of the primary ... 0.5 mm in the case of reactor temperature measurement The reactor is positioned at the center of the furnace and the 0.5 mm thermocouple is inserted into the center of the quartz tube The gas flow ... the energies of the detected electrons The emitted photoelectrons have measured kinetic energies given by 20 KE h BE s (2. 1) where h is the energy of the photon, BE is the binding energy of the...

Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 3

... differently, and the mechanism of one system might not be the same as the other system Even for the same oxide support, preparation method may affect the Au particle sizes, the oxide support morphology and ... from XRF, BET results of four kinds of gold supported iron oxide samples AuCM (Au wt%) AuCH AuDP 3. 1% 3. 9% 3. 0% 3. 4% 10 .3 XRF AuCP 267.5 33 .4 136 .9 7.4 36 .5 27.4 31 .2 6.8 29.8 25.1 26.7 As-prepared ... clarify the influences induced by the thermal pretreatment on the support , gold nanoparticles and in turn the influence on the catalytic activity towards CO oxidation and PROX reaction XRD profiles...

Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 4

... Figureure 4. 14 Au 4f XPS spectra of the fresh (a) and spent (b) Au/ TiO (CB) catalysts Figure 4. 14 Au 4f XPS spectra of the fresh (a) and spent (b) Au/TiO2 (CB) Table 4. 5 Comparison of Au 4f XPS ... 102 4. 1(A): 4. 1(B): 4. 1(C): 4. 1(D): 4. 1(E): 4. 1(F): 4. 1(G): 4. 1(H): 4. 1(I): 4. 1(J): 4. 1(K): 4. 1(L): Starting material, commercial TiO2 sample Commercial TiO2 after 10 hours of 10 M NaOH hydrothermal ... involved Curling and scrolling of the nano sheets can be observed in Figure 4. 1(E) and Figure 4. 1(F) (18hr) In Figure 4. 1(I) and Figure 4. 1(J) (24hr) of the hydrothermal process, formation of TiO2-derived...

Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 5

... 100 80 90 3449.4 80 70 70 50 650 58 8 58 8.2 87 60 60 53 2 600 55 0 50 0 450 400 -1 Wavenumber(cm ) 53 6.2 09 59 % Transmittance 90 50 350 0 3000 250 0 2000 150 0 1000 50 0 -1 Wavenumber(cm ) 160 Absorpsions(a.u.) ... that of the Au/CuO (CB) in the temperature range of 25- 100 oC For Au/CuO (NP), the conversion of CO was ca 50 % at 37oC (T50) and reached 100% at 50 oC In contrast, in the Au/CuO (CB) sample, T50 ... crystallite size of gold and the low concentration of gold 147 Au (111) a:Au/CuO (CB) b:Au/CuO (NF) c:Au/CuO (NP) 55 00 Counts 50 00 450 0 c 4000 b 350 0 a 3000 10 20 30 40 50 60 70 80 Figure 5. 2 XRD data...

Supported nanosized gold catalysi the influence of support morphology and reaction mechanism 6

... oxide – one of the earliest and most investigated support for gold nano particles is chosen as the support Although both experimental and theoretical researches concerning the effect of gold nanoparticle’s ... of a reaction mechanism similar to those proposed by G.C Bond and H.H Kung All these results provide deep insights on the gold catalysis and valuable guidance for future study of it In this thesis ... determine the nature and structure of the active center over the nano -gold catalysts: whether bi-layer gold cluster is essential for CO oxidation, what are the gold oxidation states under reaction...

Báo cáo hóa học: " Investigating the Influence of PFC Transection and Nicotine on Dynamics of AMPA and NMDA Receptors of VTA Dopaminergic Neurons" doc

... Investigating the Influence of PFC Transection and Nicotine on Dynamics of AMPA and NMDA Receptors of VTA Dopaminergic Neurons Ting Chen 1*, Die Zhang1*, Andrei Dragomir 1*, ... interrupt the connections between the PFC and the rest of the brain [28] The post-surgical care and drug administration were identical to the PFC intact animals The disruption between PFC and VTA was ... response and not just the maximum, making them more suitable in understanding the effects caused by nicotine and PFC transection - 14 - Conclusions We demonstrated that the ratio of AMPA/ NMDA...

Báo cáo y học: "The influence of serum, glucose and oxygen on intervertebral disc cell growth in vitro: implications for degenerative disc disease" potx

... regulating IVD cell behaviour In this study, we have examined the relative influence of serum, glucose, and oxygen supply, singly or combined, on the growth pattern of bovine IVD cells Since the nutrient ... levels of oxygen and in medium supplemented with 20% FCS and 320 mg/dL glucose Cell proliferation and cell viability Monolayers were harvested by trypsinisation and viable cell counts were performed ... Figure in monolayer and alginate culture systems, are summarised in Table The minimal influence of oxygen levels on IVD cell growth and behaviour is omitted from this summary Discussion alginate...

Báo cáo y học: " Risk factors for hospitalization among adults with asthma: the influence of sociodemographic factors and asthma severity" pps

... and the ensuing risk of hospitalization Systemic corticosteroid use and recent asthma hospitalization, then, appear to drive the relationship between asthma severity and hospitalization for asthma ... analysis of pulmonary and allergy specialist care, the severity -of- asthma score was associated with an increased risk of hospitalization at 18-month follow-up [25] The current study evaluates other ... frequency of current asthma symptoms (daytime or nocturnal), use of systemic corticosteroids, use of other asthma medications (besides systemic corticosteroids), and history of hospitalizations and...

on the principles of political economy and taxation phần 1 pdf

... 18 17 (third edition 18 21) Kitchener 20 01 Batoche Books 52 Eby Street South, Kitchener, Ontario N2G 3L1 Canada email: batoche@gto.net ... / " & ( 0 1 2 3 4. 5...

THE PANIC OF 1819 Reactions and Policies phần 1 pdf

... Carey and Lea, 18 31) ; and Boston New England Palladium, July 27, 18 19 4 THE PANIC AND ITS GENESIS bank note issues The number of banks in the United States rose from 88 in 18 11 to 208 in 18 15, ... January, 18 20 Of this amount, notes outstanding of the Bank fell from a peak of $10 million in early 18 18, to $8.5 million in the fall of 18 18, less than $5 million by the summer of 18 19, and $3.6 ... its expansion and launch a painful process of contraction Beginning in the summer of 18 18, the Bank precipitated the Panic of 18 19 by a series of deflationary moves The branches of the Bank were...

The influence of perceived support on service providers organizational citizenship behavior a multi focal perspective

... THE INFLUENCE OF PERCEIVED SUPPORT ON SERVICE PROVIDERS ORGANIZATIONAL CITIZENSHIP BEHAVIOR: A MULTI- FOCAL PERSPECTIVE HU ZHEHUA (B.B .A (XJTU, China), M Mng (XJTU,China )) A THESIS SUBMITTED ... system, and that in the aggregate promotes the effective functioning of the organization (Organ, Podsakoff, & MacKenzie, 2006, p4) 1.1 SOCIAL EXCHANGE, PERCEIVED SUPPORT AND ORGANIZATIONAL CITIZENSHIP ... correlation analysis are introduced The last part presents the results of hypothesis tests 4.1 CONFIRMATORY FACTOR ANALYSIS I used confirmatory factor analysis to evaluate the discriminant and convergent...

Báo cáo y học: "The Influence of Hyperbaric Oxygen Treatment on the Healing of Experimental Defects Filled with Different Bone Graft Substitutes"

... biomaterials, different combinations of bone grafts and systemic supportive therapy alternatives are important areas of research Hyperbaric oxygen therapy (HBOT) is a mode of medical treatment in which the ... on the healing of bone lesions in different anatomical regions with ischemic perfusion, the current knowledge about its influence on bone graft substitutes used in oral reconstructive surgery ... study of the effect of hyperbaric oxygen therapy on autogenous free bone grafts J Oral Maxillofac Surg 1996; 54: 975-981 38 Chen WJ, Lai PL, Chang CH, Lee MS, Chen CH, Tai CL The effect of hyperbaric...

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