Dipole-moment-driven diesel soot oxidation in the presence of alkali metal chlorides

2018 ◽  
Vol 8 (4) ◽  
pp. 970-974 ◽  
Author(s):  
Hui Chen ◽  
Yexin Zhang ◽  
Jian Zhang
Keyword(s):  
Electron Transfer ◽  
Dipole Moment ◽  
Alkali Metal ◽  
Dipole Moments ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Alkali Metal Chlorides ◽  
Metal Chlorides ◽  
Diesel Soot Oxidation

The dipole moments of alkali metal chlorides drive the oxidation of soot by promoting electron transfer, justifying their excellent activities despite their poor redox abilities.

A Novel α-Al2O3 Diesel Particulate Filter with Alkali Metal-Based Catalyst for Diesel Soot Oxidation

2013 ◽  
Vol 56 (1-8) ◽  
pp. 473-476 ◽  
Author(s):  
Keisuke Mizutani ◽  
Kensuke Takizawa ◽  
Hironobu Shimokawa ◽  
Takumi Suzawa ◽  
Naohisa Ohyama
Keyword(s):  
Alkali Metal ◽  
Diesel Particulate Filter ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Diesel Soot Oxidation ◽  
Α Al2o3

A novel catalyst for diesel soot oxidation

2005 ◽  
Vol 61 (3-4) ◽  
pp. 334-345 ◽  
Author(s):  
D. Uner ◽  
M.K. Demirkol ◽  
B. Dernaika
Keyword(s):  
Soot Oxidation ◽  
Diesel Soot ◽  
Diesel Soot Oxidation ◽  
Novel Catalyst

Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation

2007 ◽  
Vol 336-338 ◽  
pp. 1995-1998
Author(s):  
Yong Heng Zhang ◽  
Jian Zhong Xue
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Amorphous Phase ◽  
Porous Alumina ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Oxidation Activity ◽  
Diesel Soot Oxidation ◽  
Oxidation Onset Temperature ◽  
Catalyst Systems

The catalysts based on V/K/Ca and V/Ks/Ce systems for diesel soot catalytic oxidation were synthesized onto the porous alumina substrates. Both catalyst systems showed a good catalytic oxidation activity. The V/K/Ca system exhibited the lowest oxidation onset temperature (OOT) of about 359oC with a composition of V/K/Ca =1:1:0.1 where the V and Ca and/or K elements could form a kind of amorphous phase that determined the catalytic activity. The V/Ks/Ce system displayed the lowest OOT of about 350oC with a composition of V/Ks/Ce = 1:2:0.1 where the K2SO4 and K5V2O3(SO4)4 phases could contribute most to the catalytic activity.

The effect of alkali metal chlorides and temperature on acid-hydrolysis residual pyrolysis products

2019 ◽  
Vol 137 ◽  
pp. 106-117 ◽  
Author(s):  
Qianqian Guo ◽  
Guanyi Chen ◽  
Zhanjun Cheng ◽  
Beibei Yan ◽  
Wenchao Ma ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Acid Hydrolysis ◽  
Alkali Metal Chlorides ◽  
Pyrolysis Products ◽  
Metal Chlorides

Reversible electrode potentials for formation of solid and liquid chlorozirconate and chlorohafnate compounds

1993 ◽  
Vol 71 (9) ◽  
pp. 1283-1289 ◽  
Author(s):  
G.J. Kipouros ◽  
S.N. Flengas
Keyword(s):  
Thermal Decomposition ◽  
Alkali Metal ◽  
Electrochemical Behaviour ◽  
Thermochemical Data ◽  
Dilute Solutions ◽  
Alkali Metal Chlorides ◽  
Metal Chlorides ◽  
Electrode Potentials ◽  
Standard Electrode Potentials

The standard electrode potentials for the formation of the pure solid and molten compounds Li2ZrCl6, Li2HfCl6, Na2ZrCl6, Na2HfCl6, K2ZrCl6, K2HfCl6, Cs2ZrCl6, and Cs2HfCl6 have been calculated from measured vapour pressures corresponding to their thermal decomposition at equilibrium and from available thermochemical data. Reversible potentials for the formation of Na2ZrCl6 and of K2ZrCl6 in solution according to the reaction[Formula: see text]where A is Na or K, have been calculated from available equilibrium vapour pressures as functions of the mole fractions of the alkali hexachlorocompounds. Standard potentials for the above reaction and "formal" potentials are also given. The latter are useful in predicting the electrochemical behaviour of dilute solutions of the hexachlorozirconates in alkali metal chlorides.

scholarly journals Investigation of Copper-supported Ceria Nanofibers for Catalytic Oxidation of Diesel Soot

2021 ◽  
Author(s):  
Dan Bahadur Pal ◽  
Anupama Mishra
Keyword(s):  
Photoelectron Spectroscopy ◽  
Fixed Bed ◽  
Tubular Reactor ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Air Flow Rate ◽  
Reaction Conditions ◽  
Tight Contact ◽  
Diesel Soot Oxidation ◽  
Working Parameters

Abstract In the present research, CeO2 and CuO/CeO2 nanofibers were synthesized by electrospinning at 12 kV DC by maintaining a tip to collector distance of 10 cm. The morphology of the as-synthesized nanofibers was determined by scanning electron microscopy, and their elemental composition was verified by X-ray photoelectron spectroscopy. The activity of the prepared samples for diesel soot oxidation was determined in a bench-scale fixed bed tubular reactor, and effluent gases were analyzed by online gas chromatography. The variations of working parameters (air flow rate, catalyst-soot ratio, catalyst-soot contact type) were evaluated in a range to optimized reaction conditions for diesel soot oxidation. The catalyst with 40% CuO/CeO2 had the highest surface area, the smallest crystallite size, and the best activity for diesel soot oxidation (tight contact) at Tf = 318oC.

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