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Mostrando 601 - 620 Resultados de 2,617 Para Buscar '"reaction rate"', tiempo de consulta: 2.36s Limitar resultados
  1. 601
    “…Capture theory models consistently overestimate the reaction rate coefficients and cannot account for the observed inverse kinetic isotope effects. …”
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  2. 602
    “…[Image: see text] In plasmon-mediated photocatalysis it is of critical importance to differentiate light-induced catalytic reaction rate enhancement channels, which include near-field effects, direct hot carrier injection, and photothermal catalyst heating. …”
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  3. 603
    por Zeng, Meirong, Wilson, Kevin R.
    Publicado 2021
    “…Here we report evidence that oxygenated molecules accelerate the heterogeneous reaction rate of chlorine gas with an alkene (squalene, Sqe) in submicron droplets. …”
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  4. 604
    “…The photocatalytic degradation rate for HCHO of 40B0/CN under solar light reached 87.7%, and the reaction rate constant was 0.0166 min(−1), which was 1.6 times higher than that of BiOCl. …”
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  5. 605
    “…The presented method features a fast reaction rate (within 20 min), mild conditions, chemoselectivity, wide sequence scope, and high yields (up to 87%). …”
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  6. 606
    por Wai, Htet Su, Li, Chaoyang
    Publicado 2022
    “…The AZO film deposited with Al doping ratio of 2 wt % showed the highest photocatalytic efficiency between the wavelength of 475 nm and 700 nm, with the high first-order reaction rate of 0.004 min(−1) under ultraviolet radiation. …”
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  7. 607
    “…[Image: see text] We describe and test on some organic reactions a parallel implementation strategy to compute anharmonic constants, which are employed in semiclassical transition state theory reaction rate calculations. Our software can interface with any quantum chemistry code capable of a single point energy estimate, and it is suitable for both minimum and transition state geometry calculations. …”
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  8. 608
    “…This process is affected by changes in the operating conditions and by raw material impurities which influence the reaction rate and degrade the polymer properties. As the system model is multivariable with coupled dynamics and constraints, linear model predictive control (LMPC) is employed here. …”
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  9. 609
    “…The reaction energy barrier was higher and the reaction rate was slower, and therefore, the reduction swelling rate of pellets was lower at this stage. …”
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  10. 610
    “…The higher the temperature of gelation, the higher the reaction rate. The crosslinking density and the elastic properties seem to be controlled by the diffusion of the polymer segments, rather than by the kinetics of the reaction. …”
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  11. 611
    “…The Au/CNT-A sample with smaller Au sizes deserved a faster reaction rate, mainly resulting from the higher dispersion degree (23.5%) of Au with the available exposed sites contributed by small gold particles. …”
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  12. 612
    “…Crucially, Ru/SBA-15 exhibited a zero-order reaction rate with an apparent activation energy (Ea) as low as 10.88 kJ mol(−1) and a TON of 172.84 at 80 °C. …”
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  13. 613
    “…Pre-alloying the Cu and In metals prior to laser annealing significantly enhances the selenisation reaction rate. Laser annealing for six seconds approaches a near phase-pure material, which exhibits similar crystalline quality to the reference material annealed for ninety minutes in a tube furnace. …”
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  14. 614
    “…Through the experimental results, we verified that this DNAzyme regulation strategy relatively reduces the cost of logic circuits to some extent and significantly increases the reaction rate, and can also be used to indicate the range of Mg(2+) concentrations. …”
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  15. 615
    “…After removing the contributions from reactions with radical byproducts, reaction with water vapor and wall loss, we obtained the unimolecular reaction rate coefficient of syn-CH(3)CHOO (at 300 torr), which increases from (67 ± 15) s(−1) at 278 K, (146 ± 31) s(−1) at 298 K, to (288 ± 81) s(−1) at 318 K with an Arrhenius activation energy of ca. 6.4 kcal mol(−1) and a weak pressure dependence for 100–700 torr. …”
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  16. 616
    “…The degradation reaction followed second-order kinetics; the reaction rate was proportional to both H(2)O(2) concentration and the copper–tripeptide concentration, but it was independent of the trypan blue concentration. …”
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  17. 617
    “…Under the conditions of H(2)O(2) concentration of 4.9 mmol L(−1), catalyst dosage of 5 g L(−1), pH of 5, reaction temperature of 60 °C and MB initial concentration of 100 mg L(−1), the as-synthesized catalysts showed much greater reaction rate and degradation efficiency of MB than Fe(2)O(3)/ATP catalyst. …”
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  18. 618
    “…A kinetic model describing the gas-phase reactions has been constructed based on the predictions of reaction channels and rate constants by quantum chemical and statistical reaction-rate calculations. The primary reaction pathway includes the reaction of NF(3) with H atoms, NF(3) + H → NF(2) + HF, and subsequent reactions involving NF(2) and other radicals. …”
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  19. 619
    por Feng, Yingming, Li, Xiaobing
    Publicado 2020
    “…Oxidation of free radicals was the main mechanism of PA degradation in the catalytic ozonation process, occurring with a pseudo-first-order reaction rate at a constant of 0.0993 min(−1) (CMP) under the pH of 7.20 and catalyst dose of 3 g L(−1). …”
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  20. 620
    “…Kinetic modelling suggested that the diffusion of Ru through the ash layer of Al powder controlled the reaction rate with an activation energy of 40.75 kJ mol(−1). …”
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