Temporary overvoltages in the Vietnam 500 kV transmission line

Quoc, Thang Tran; Du, Shiyue; Van, D.P.; Khac, N.N.; Dinh, L.T.

doi:10.1109/tdcllm.1998.668378

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Redox or acid-base properties of such materials may be tailored to some extent by controlling hydrotalcite composition, as shown e.g. in NH 3 -SCR [35][36][37][38][39] or DRM [40][41][42][43][44][45] reactions. Another advantage of double layered hydroxides is that the incorporated cations are usually homogenously distributed due to their random arrangement in the brucite-like layers.…”

Section: Introductionmentioning

confidence: 99%

On the effect of yttrium promotion on Ni-layered double hydroxides-derived catalysts for hydrogenation of CO2 to methane

Sun

Świrk

Wierzbicki

et al. 2021

International Journal of Hydrogen Energy

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Ni-containing mixed oxides derived from layered double hydroxides with various amounts of yttrium were synthesized by a co-precipitation method at constant pH and then obtained by thermal decomposition. The characterization techniques of XRD, elemental analysis, low-temperature N 2 sorption, H 2 -TPR, CO 2 -TPD, TGA and TPO were used on the studied catalysts. The catalytic activity of the catalysts was evaluated in the CO 2 methanation reaction performed at atmospheric pressure. The obtained results confirmed the formation of nano-sized mixed oxides after the thermal decomposition of hydrotalcites. The introduction of yttrium to Ni/Mg/Al layered double hydroxides led to a stronger interaction between nickel species and the matrix support and decreased nickel particle size as compared to the yttrium-free catalyst.The modification with Y (0.4 and 2 wt.%) had a positive effect on the catalytic performance in the moderate temperature region (250-300 °C), with CO 2 conversion increasing from 16 % for MO-0Y to 81% and 40% for MO-0.4Y and MO-2.0Y at 250 °C, respectively. The improved activity may be correlated with the increase of percentage of medium-strength basic sites, the stronger metal-support interaction, as well as decreased crystallite size of metallic nickel. High selectivity towards methane of 99% formation at 250 °C was registered for all the catalysts.

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Section: Introductionmentioning

confidence: 99%

On the effect of yttrium promotion on Ni-layered double hydroxides-derived catalysts for hydrogenation of CO2 to methane

Sun

Świrk

Wierzbicki

et al. 2021

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

show abstract

“…Being one of the interesting phenomena, ferroresonance has been extensively investigated by the power engineering community. The first citations related to this phenomenon belong to the beginning of the 20th century [7]. Since then, a large number of papers have been published describing the phenomenon, proposing analytical methods or reporting experienced cases.…”

Section: Introductionmentioning

confidence: 99%