Zobrazeno 1 - 9
of 9
pro vyhledávání: '"David C. Dankworth"'
Autor:
Pengcheng Chen, Dingxin Fan, Yunlong Zhang, Annabella Selloni, Emily A. Carter, Craig B. Arnold, David C. Dankworth, Steven P. Rucker, James R. Chelikowsky, Nan Yao
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Controlled breaking of a chemical bond by mechanical forces can provide key insight into reaction mechanisms. Here the authors, using atomic force microscopy and computations, measure the forces involved in breaking a single dative bond between a CO
Externí odkaz:
https://doaj.org/article/f71109c16f8e4370a7100d9ab5b3b7b1
Autor:
Brett Parkinson, Klaus Hellgardt, Clemens F. Patzschke, David C. Dankworth, Dimitrios Nikolis, Sumathy Raman
Publikováno v:
International Journal of Hydrogen Energy. 46:6225-6238
Methane pyrolysis in molten salts has the potential to provide low-cost, low-CO2 emission H2 on an industrial scale. The alkali halides (NaBr, KBr, KCl, NaCl, (Na,K)Br) are inexpensive and environmental benign salts, which may facilitate sequestratio
Autor:
Emily A. Carter, Yunlong Zhang, Annabella Selloni, Craig B. Arnold, Dingxin Fan, James R. Chelikowsky, Nan Yao, David C. Dankworth, Pengcheng Chen, Steven P. Rucker
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Bond breaking and forming are essential components of chemical reactions. Recently, the structure and formation of covalent bonds in single molecules have been studied by non-contact atomic force microscopy (AFM). Here, we report the details of a sin
A simplified model for management of resonance exotherms in fixed-bed reactors using liquid carriers
Publikováno v:
Chemical Engineering Science. 54:2659-2667
Resonance exotherms in fixed-bed reactors are less common than typical runaway reaction exotherms and standard mitigation procedures may not have been designed to manage them. Although resonance exotherms are transient phenomena, eventually leaving t
Publikováno v:
Chemical Engineering Science. 47:3257-3264
In trickle bed reactors, a gas and a liquid flow together through the interstices of a random array of solid packing. A pulsing flow pattern is obtained at high gas and liquid fluxes. A macroscopic volume averaged model can be used to mathematically
Publikováno v:
Physica D: Nonlinear Phenomena. 55:197-220
A computer-assisted analysis of the long-wave solutions of a two-phase flow model in packed beds is presented, based on the numerical study of global bifurcations. A time-dependent, pulsing flow arises spontaneously for relatively high flow rates of
Publikováno v:
Chemical Engineering Science. 47:337-346
An operating diagram approach to estimating detailed features of one-dimensional pulsing flow is described, and the model predictions are compared with experimental data on cocurrent downflow. A detailed analysis of the local and global bifurcations
Publikováno v:
Chemical Engineering Science. 45:2239-2246
Time dependent flow often occurs in multiphase reactors. Examples of practical interest include pulsing flow in the case of cocurrent downflow of gas and liquid through a packed column, and voidage fluctuations in fluid-solid flows. In these examples
Publikováno v:
AIChE Journal. 35:1282-1292
A macroscopic model based on the volume-averaged equations of motion is presented for countercurrent gas-liquid flow in a packed bed. The model yields a column-limited flooding point as the loss of existence of uniform states. It correctly predicts t