Yield vs. time

Continuous Simulation, C0NGAS. There are no published data available on propylene continuous polymerization suitable to check the accuracy of the C0NGAS model. However, there is an equation for yield vs. time published by Wisseroth (3 ) for a completely backmixed continuous reactor ... 

The C0NGAS simulation was used to generate the three yield vs. time profiles in Figure 6 using the most active BASF catalyst at 60 , 80 , and 100 C. At 60 C, diffusion becomes dominant only at the higher yields, whereas at 80 C and 100 C, all of the results are diffusion-dominated (Rdf CAT diffusion... 

The model GASPP was used to correlate yield vs. time for the 20 C boost to 100 C reaction temperature. With the first run, a value of kg = 0.00198 cm/sec was required to achieve the low yield reported. His second run had a yield of 13750 at 4.68 hr. Model GASPP requires kg = 0.00294 cm/sec to give this result at 100 C. This rate constant is only 2% greater than the kg reported in Table I here for the lowest activity BASF TiCi s. On this basis,... 

Figure 1 shows a plot of yield vs time for the reaction of 4-chloronitrobenzene with potassium cresoxide, catalyzed by Bu NBr, PEGM 5000 (polyethylene glycol monomethyl ether, avg. molecular weight = 5000) or PVP-X (crosslinked polyvinylpyrrolidone). 

Figure 3. Experimental CO yield vs. time for three pellet lengths, 0.5 cm (-) 1.0 cm (-...

Also, as the total area of growing crystals increases so does the rate at which chemical nutrients are consumed. The slope of the curve of yield against time therefore increases. Later, as the supply of nutrients becomes more and more exhausted, the slope of the curve decreases to zero. As a result curves of yield vs. time are sigmoid in contour, as illustrated in Figure 4 (11). 

Figure 1. Outer dynamics in comparison with model of Mohler et al. [4] virus yield vs. time post infection for different MOI (circles experimental results, solid line unstructured model, dashed line structured model, tshift = 4.5 h)...

Figure 7. Yield vs. time curves for copolymerization. A, spontaneous initiation with peroxidized monomer at —60 °C B, normal UV initiation with pure monomer at —60 °C C, UV initiation of peroxidized monomer at —60 °C following storage...

In the case of acetone, the major product is mesityl oxide. We found that this compound has a drastic effect on the polymerization rate. Polymerization was totally inhibited for times in excess of 12 hr for a run in which acetone containing 1% added mesityl oxide was used as the solvent. Figure 8 shows a yield vs. time plot for polymerization using pure acetone. The initial rate was 4.6%/hr. After 3 hr, 0.3% mesityl oxide was added via syringe resulting in total inhibition of polymerization. 

Figure 13.11 Plot of molecular weight and yield vs time for the synthesis of polycaprolactone in R-134a. (Reproduced with permission from [95], Copyright (2007) American Chemical Society).

Figure 24, COg yield vs. time from pyrolysis of Beulah North Dakota lignite. Symbols are data and lines are theory using distributed rate kinetics. (Reproduced, with permission, from Ref. 22.)...

MUA with one 0 incorporated, and the correlative variation of the yield vs. time curves for MUA and 15, support the stepwise oxygenation mechanism as opposed to one-step insertion via a dioxetane intermediate. 

Figure 8. Rate of formation of major products at CHdCsHg = 4.0 (yield vs. time ...

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