The effect of native oxide on thin gate oxide integrity

Chin, Albert; Lin, Bo-Wen; Chen, W.J.; Lin, Yeou-Ming; Tsai, Chao-Ming

doi:10.1109/55.728901

Cited by 38 publications

(36 citation statements)

References 13 publications

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“…The XRD analysis of the tested catalysts showed that the position and shape of the XRD pattern of the catalyst supported on the CNTs were very similar to those of the system supported on the AC, except the features at 2h = 26.1°, 43.1°and 53.5°, which was due to the diffraction of (002), (100) and (004) plane of graphite-like tube-wall of the CNTs [16,18]. However, they were markedly different from those of non-supported Ni 1 Mo 1 K 0.05 system (see Fig.…”

Section: Xrd Analysismentioning

confidence: 76%

“…The freshly prepared CNTs were purified through treatment of boiling nitric acid (*8 mol/ L) for 12 h, followed by rinsing with the de-ionized water twice, and then drying at 383 K. In the purified CNTs, contents of the total element-carbon and the graphitized carbon were C99.5 and C90% (mass percentage), as evidenced by elemental analysis and H 2 -TPH (temperatureprogrammed hydrogenation) measurements, respectively. Previous characterization studies [15,16] have demonstrated that those CNTs were ''Herringbone-type'' CNTs, with the outer diameters of 10-50 nm, inner diameters of 3-7 nm, and N 2 -BET surface area of 130 m 2 g -1 .…”

Section: Preparation Of Cntsmentioning

confidence: 99%

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MWCNT-Supported Ni–Mo–K Catalyst for Higher Alcohol Synthesis from Syngas

Lin

et al. 2010

Catal Lett

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A type of novel MWCNT-supported Ni-Mo-K catalysts for higher alcohol synthesis (HAS) from syngas was developed, which displayed excellent performance for the selective formation of C 1-3 -alcohols and DME from syngas. Over the 15%Ni 1 Mo 1 K 0.05 /CNTs catalyst under the reaction conditions of 5.0 MPa and 538 K, the C-based selectivity of (C 1-3 -alc. ? DME) reached 59.0%, with the corresponding STY of 205 mg h -1 g -1 . This value was 1.16 times that of the 35%Ni 1 Mo 1 K 0.05 /AC catalyst with the optimal Ni 1 Mo 1 K 0.05 loading, and 1.76 times that of the non-supported co-precipitated Ni 1 Mo 1 K 0.05 host system, under the same reaction conditions. The results of the catalyst characterizations revealed that the CNT-support has strong influence on the chemical states of catalyst via its interaction with the supported Ni-Mo components, leading to the increase of the molar percentage of NiO(OH) and Mo 4? /Mo 5? (the two kinds of catalytically active surface-species related closely to selective formation of C 1-3 -alcohols) and the dramatic decrease of the molar percentage of Ni 0 and Mo 0 (the two kinds of catalytically active surface-species related closely to selective formation of hydrocarbons, especially methanation of CO). Moreover, the CNT-support also provided the sp 2 -C surfacesites for adsorption-activation of H 2 . All these factors contribute to an increase in selectivity of generating C 1-3 -alcohols.

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Section: Xrd Analysismentioning

confidence: 76%

Section: Preparation Of Cntsmentioning

confidence: 99%

MWCNT-Supported Ni–Mo–K Catalyst for Higher Alcohol Synthesis from Syngas

Lin

et al. 2010

Catal Lett

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“…In the purified MWCNTs, contents of the total carbon and the graphitized carbon were C99.5% and C90% (mass%), as evidenced by elemental analysis and H 2 -TPH measurements, respectively. Previous studies [20][21][22] have shown that this type of MWCNTs was a ''Herringbone-type'' of MWCNTs (symbolized as CNTs(h-type), simplified as CNTs hereafter unless otherwise specified), with the outer diameters of 15-60 nm, inner diameters of 3-8 nm, and N 2 -BET surface area of *120 m 2 g -1 .…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…The resulting mud cake-like solid was dried at 383 K for 10 h and then calcined in N 2 atmosphere at 623 K for 2 h, thus yielding the precursor of the Pd i Ga j -y%(x%Pd/CNTs) catalysts. The three reference systems, i.e., the counterparts doped with the simple CNTs(h-type) or ''parallel-type'' CNTs (noted as ''CNTs(p-type)'') [20][21][22] and the CNT-free host catalyst, were prepared in the similar way. All samples of catalyst precursor were pressed, crushed, and sieved to a size of 40-80 mesh for the activity evaluation.…”

Section: Catalyst Preparationmentioning

confidence: 99%

Pd-Decorated CNT-Promoted Pd-Ga2O3 Catalyst for Hydrogenation of CO2 to Methanol

Kong

Lin

et al. 2011

Catal Lett

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“…The CNTs used in the present work were a ''Herringbone type'' of multi-walled carbon nanotubes [13,15]. Previous characterization studies demonstrated that this type of CNTs were constructed by a superposition of many graphene layer facets, which were tilted at a certain angle with respect to the axis of the central hollow nanofibre, as if a number of cones were placed one on top of the other [13,15]. Their outer diameters were in the range of 15-50 nm, the inner diameters in 3-7 nm and the N 2 -BET surface area at about 130 m 2 /g.…”

Section: Texture and Properties Of Cntsmentioning

confidence: 99%

Pt Catalyst Supported on Multi-Walled Carbon Nanotubes for Hydrogenation-Dearomatization of Toluene and Tetralin

et al. 2010

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A type of MWCNT-supported Pt catalysts for the hydrogenation-dearomatization (HDA) of aromatics was developed, which displays excellent performance for HDA of two model compounds, toluene and tetralin. Over the 1% Pt/CNTs catalyst, near 100% conversion of toluene or tetralin was observed under the reaction temperature of 373 K. The specific reaction rate of HDA of toluene and tetralin reached 0.0524 and 0.0174 mmol s(-1) (m(-surf.)(2) (Pt))(-1), respectively. Both of the values were 1.18 times those (0.0444 and 0.0148 mmol s(-1) (m(-surf. Pt)(2))(-1), respectively) of the 2.4% Pt/AC catalyst with the optimal Pt loading under the same reaction conditions. It was experimentally found that using the CNTs in place of AC as the support of the catalyst did not cause a significant change in the apparent activation energy for the HDA reaction of toluene or tetralin, but led to a certain increase in the molar percentage of catalytically active Pt-species (Pt-0) in the total Pt-amount at the surface of the functioning catalyst. In addition, the Pt/CNTs catalyst could reversibly adsorb a greater amount of hydrogen under atmospheric pressure and temperatures ranging from room temperature to 773 K. This unique feature would help to generate a microenvironment with higher stationary state concentration of active hydrogen-adspecies at the surface of the functioning catalyst. These effects favored increasing the rate of the HDA reaction of toluene or tetralin.National Basic Research ("973'') of China [2009CB939804

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The effect of native oxide on thin gate oxide integrity

Cited by 38 publications

References 13 publications

MWCNT-Supported Ni–Mo–K Catalyst for Higher Alcohol Synthesis from Syngas

MWCNT-Supported Ni–Mo–K Catalyst for Higher Alcohol Synthesis from Syngas

Pd-Decorated CNT-Promoted Pd-Ga2O3 Catalyst for Hydrogenation of CO2 to Methanol

Pt Catalyst Supported on Multi-Walled Carbon Nanotubes for Hydrogenation-Dearomatization of Toluene and Tetralin

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