Non-steady-state and transient effects in medium-pressure hydrogenation of carbon monoxide over rhodium catalysts

1986 ◽  
Vol 82 (2) ◽  
pp. 431 ◽  
Author(s):  
Kevin Gilhooley ◽  
S. David Jackson ◽  
Stuart Rigby
Keyword(s):  
Carbon Monoxide ◽  
Steady State ◽  
Rhodium Catalysts ◽  
Transient Effects ◽  
Medium Pressure ◽  
Hydrogenation Of Carbon Monoxide

scholarly journals Hydrogenation of carbon monoxide over vanadium oxide-promoted rhodium catalysts

1987 ◽  
Vol 33 (1) ◽  
pp. 181-208 ◽  
Author(s):  
B.J. Kip ◽  
P.A.T. Smeets ◽  
J. van Grondelle ◽  
R. Prins
Keyword(s):  
Carbon Monoxide ◽  
Vanadium Oxide ◽  
Rhodium Catalysts ◽  
Hydrogenation Of Carbon Monoxide

Promoting effect of lanthana in the hydrogenation of carbon monoxide over supported rhodium catalysts

1988 ◽  
Vol 42 (1) ◽  
pp. 77-89 ◽  
Author(s):  
R. Kieffer ◽  
A. Kiennemann ◽  
M. Rodriguez ◽  
S. Bernal ◽  
J.M. Rodriguez-Izquierdo
Keyword(s):  
Carbon Monoxide ◽  
Rhodium Catalysts ◽  
Promoting Effect ◽  
Hydrogenation Of Carbon Monoxide

Effects of slide-to-roll ratio and varying velocity on the lubrication performance of grease at low speed

2021 ◽  
pp. 135065012199336
Author(s):  
Yiming Han ◽  
Jing Wang ◽  
Xuyang Jin ◽  
Shanshan Wang ◽  
Rui Zhang
Keyword(s):  
Steady State ◽  
Critical Speed ◽  
Industrial Applications ◽  
Transient Effects ◽  
Disintegration Time ◽  
Low Speed ◽  
Existence Time ◽  
Pure Rolling ◽  
Lubrication Performance ◽  
Long Time

Under steady-state pure rolling conditions with low speed, the thickener fiber agglomerations can be maintained for a long time, generating a beneficial thicker film thickness. However, in industrial applications, motions with sliding or transient effects are very common for gears, rolling-element bearings or even chain drives, evaluation of the grease performance under such conditions is vital for determining the lubrication mechanism and designing new greases. In this project, optical interferometry experiments were carried out on a ball-disk test rig to study the disintegration time of the grease thickener agglomerations with the increase of the slide-to-roll ratio under steady-state and reciprocation motions. Under steady-state conditions, the thickener fiber agglomeration can exist for a while and the time becomes shorter with the increase of the slide-to-roll ratio above the critical speed. Below the critical speed, the thickener fiber can exist in the contact in the form of a quite thick film for a very long time under pure rolling conditions but that time is decreased with the increase of the slide-to-roll ratio. The introduction of the transient effect can further reduce the existence time of the thickener.

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