Examples of 'catalyst activation' in a sentence
Meaning of "catalyst activation"
catalyst activation - This refers to the process of initiating or enhancing a chemical reaction using a substance that speeds up the reaction without being consumed
How to use "catalyst activation" in a sentence
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catalyst activation
In situ catalyst activation took place.
Such addition accomplishes catalyst activation.
Catalyst activation can be effected in any known manner.
One of the initiatives was to change catalyst activation batch.
Catalyst activation was performed in the reactor under vacuum by heating.
A photoinitiator is useful for decreasing the catalyst activation time.
No catalyst activation is observed.
There was no significant exotherm for this catalyst activation procedure.
Examples of the catalyst activation process include the following methods.
Thoroughly stir liquid material in the bucket prior to catalyst activation.
Catalyst activation is inferred from a drop in epoxide partial pressure in the reactor.
Use of a tubular reactor to provide catalyst activation is also possible.
Catalyst activation is verified following initial introduction of alkylene oxide by a noticeable pressure drop.
The flow rate of the inert gas is adjusted to produce maximum catalyst activation.
Catalyst activation preferably takes place shortly before the catalyst is contacted with the olefins.
See also
A first portion of propylene oxide was added to the reactor for the catalyst activation.
Catalyst activation is an extremely important step in preparing the desired low molecular weight PTMEG.
Reducing the water content of the first starter compound by stripping offers faster catalyst activation.
In this manner, catalyst activation can be unambiguously verified.
The CBL level can also be controlled by varying the catalyst activation temperature.
Reduce the catalyst activation temperature, and limit the side reactions.
By CO generating precursor is meant a compound which releases CO under catalyst activation conditions.
Improved stripping results in rapid catalyst activation and / or improved polyols and polyurethanes.
Most often, hydrogen is also present during catalyst activation.
This catalyst activation period may take from as little as 5 minutes to several hours.
Alternatively, this may be accomplished in a catalyst activation step.
Catalyst Activation A nitrogen gas flow of 51 cubic centimeters per minute was started.
Thus, there is an ongoing need to develop improved catalyst activation methods.
Catalyst Activation The modified Erlenmeyer flask described above was flushed ( septum attached ) with dry nitrogen.
In a first aspect, the invention relates to a catalyst activation process as defined in claim 1.
These activators are expensive, especially when large amounts are necessary for catalyst activation.
Typically the high pressure catalyst activation procedure takes about 18 hours.
The invention will be described in more detail below . Catalyst activation process.
When catalyst activation is verified, the remaining propylene oxide ( 512g ) is added gradually over about 4 h.
By the use of the foregoing catalyst activator, improved catalyst activation is provided.
No catalyst activation is observed, even after stirring the reaction mixture for another hour at 130°C.
Further, Applicants have found that impurities may prevent catalyst activation.
Propylene oxide ( 72 g ) is added, and catalyst activation is verified by a rapid pressure drop.
The final catalyst component slurry contained a Ti concentration of 1.25 millimolar . Catalyst Activation.
Catalyst Activation The above-described catalyst was activated by calcination in dry air at 600°C.
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