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Ratings formation

As m the acid catalyzed halogenation of aldehydes and ketones the reaction rate is mde pendent of the concentration of the halogen chlorination brommation and lodmation all occur at the same rate Formation of the enolate is rate determining and once formed the enolate ion reacts rapidly with the halogen... [Pg.765]

The rate of formation of water would increase with increased rates of conversion of 2-methylpropene and decrease with decreased rate formation. The yield of water, therefore, increased first and then decreased because of the combined effects of these two processes. On the other hand, if methacrolein is formed by Reaction I and subsequently further oxidized by Reaction II, its yield will depend on the extent of Reactions I and II, and an optimum will exist. In agreement with this, it was found that the optimal amount of selenium dioxide giving the highest selectivity under operating conditions was about 0.7% by weight of the catalyst. [Pg.287]

Important parameters in a catalytic membrane reactor for dehydrogenation are the reaction rate, the permeability (i.e. permeation rate) and the permselectivity for hydrogen. It appears at first sight that good conditions are those where the permeation rate (removal of H2) and the reaction rate (formation of H2) are close to each other, but the role of the permselectivity is also important. [Pg.418]

All of our existing calibrated methods were then modified to fit this new, smaller column, faster flow rate format and we ensured that there was, once again, total cross-correlation between the LC/MS analyses and the methods running on the autoprep systems. We effectively now had a system that could process 10 mg of a compound in 15 min with single peak/single vial fractionation or. as required, could process multiple hundreds of milligrams in an unattended fashion. In either case no specialist... [Pg.339]

Figure 8. Effect of hydrolyzable chloride on the urethane rate formation constant. Figure 8. Effect of hydrolyzable chloride on the urethane rate formation constant.
Cranberry juice has been widely used for the prevention, treatment, and symptomatic relief of urinary tract infections (Sobota, 1984). Also, cranberry juice has been given to patients to help reduce urinary odors in incontinence (Kraemer, 1964 DuGan and Cardaciotto, 1966 Anonymous, 1994). Another potential benefit of the use of cranberry is a decrease in the rates formation of kidney stones (Stemlieb, 1963 Zinsser et al., 1968 Light et al., 1973). [Pg.215]

Write the rate law for each species in each reaction and then write the net rates formation of NO, O2, and Nj. [Pg.332]

The intensity of chemiluminescence can be determined as the peak-top intensity /cL-max or the area of the peak,, 4n max. In the absence of antioxidants, the rate formation of peroxy radicals, d[POO ]/dt, can be expressed in terms of the initiation rate of oxidation, Rt. [Pg.95]

The stability of BaPbOs and its effect on the performance of a battery over its useful life have also been investigated for automotive applications [12-14]. A conventional automotive cell with 1 wt.% BaPbOs in the positive paste and a control cell were formed by means of a standard high-rate formation procedure. Cell performance was then evaluated by means of a standard Battery Council International (BCI) sequence of reserve capacity and cold-cranking tests. The cell containing BaPbOs formed three times faster with 12% less input capacity. The BCI test results of the two cells were comparable. [Pg.116]

Figure 3.4 Gasification of used tyres with steam 14 (A) rate formation of H2 and CO versus temperature, (B) relationship between the surface area and the yield of the carbon residue. Figure 3.4 Gasification of used tyres with steam 14 (A) rate formation of H2 and CO versus temperature, (B) relationship between the surface area and the yield of the carbon residue.
From equation 53, one can estimate the reservoir boundary with the known production rate, formation thickness h, and the permeability k. [Pg.253]

Figure 2 shows the influence of the pH2 on the coking rate rc) and coke concentration. The coking rate formation curves have been calculated from the numerical derivative of the experimental coke-time curves. It can be seen in Figure 2 how all the rc vs. [Pg.393]

We have studied the effects of mixture composition on droplet microstructure (5), and summarized these results in the form of a rich morphology diagram (Figure 3) in the parameter space of mass fraction and shear rate. Formation of strings of the suspended phase was observed over a broad composition window. At each composition, experiments were stopped when strings were formed. We also found a non-transient moiphology where we saw arrangement of the droplets in ordered pearl-necklace chain structures. [Pg.240]

Fillers take the space of more expensive polymer in a formulation while reinforcers strengthen the formulation. Reinforcing fillers perform both functions. Processing aids allow lower energy, lower temperature, or lower defect rate formation of objects from a formidation. Dyes change the reflectance spectrum of a formulation so that objects made from it have the correct color. [Pg.844]

Experimental results of the rate formation of oxygen are represented by the following equation [Niemantsverdriet] ... [Pg.250]

Accumulation rate = formation rate — consumption rate (2.1)... [Pg.58]

Active imidazoles are present throughout the course of curing, and overall curing rates (formation of polyethers) vary with imidazole structure, even though all imidazoles form adducts rapidly. Riccardi et al. [ 102] explain this discrepancy as the instability of adducts of imidazoles with epoxides. Parallel to the polymerization, there occur cleavage of N—C bonds and the deprotonation of the carbon at the 2-position of imidazole, and thus the imidazoles are regenerated. [Pg.420]

The characteristies of cement pastes or concrete from the initial slump to strength and durability are directly or indirectly related to the type, the rate formation, and the amount of the hydration products. Several faetors have to be taken into consideration in the elucidation of the role of superplasticizers on the hydration of cement. Some ofthe factors that affect the rate of hydration include the type of cement, the characteristics of the ions in the solution (sulfate, OH, and alkalis), the particle size/surface area of cement, the relative amoimts of the individual phases of cement, the dosage ofthe superplasticizer, the cation associated with the superplasticizer, the type of superplasticizer, its molecular weight, the dosage, the temperature of hydration, and the water cement ratio. [Pg.273]


See other pages where Ratings formation is mentioned: [Pg.432]    [Pg.330]    [Pg.262]    [Pg.619]    [Pg.367]    [Pg.32]    [Pg.146]    [Pg.148]    [Pg.620]    [Pg.16]    [Pg.76]    [Pg.194]    [Pg.435]    [Pg.229]    [Pg.283]    [Pg.131]    [Pg.124]    [Pg.101]    [Pg.689]    [Pg.382]    [Pg.132]    [Pg.124]    [Pg.143]    [Pg.225]    [Pg.3429]    [Pg.246]    [Pg.42]    [Pg.808]    [Pg.81]    [Pg.91]   
See also in sourсe #XX -- [ Pg.877 ]




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Associate formation rate

Atomic oxygen rate-determining formation

Bipyridine formation rates

Bubble formation flow rates

CO formation rate

CO2 formation rate

Carbon monoxide rate of CO, formation

Coke Formation Rate

Coke formation rate constant

Copper complexes formation rate constants

Crystallization from solution nuclei formation rate

Daughter activity, formation rate

Epoxides rate of formation by ring-closing reactio

Ester formation, polymerization rates

Evaporation rate during film formation

Finite Rate of Nuclei Formation

Flow Rate and Principle of Ion Formation

Formation rate

Formation rate

Formation rate constant

Formation rate electrolysis time

Formation rate function

Formation rate temperature

Formation rate, straight chain

Formation rate, straight chain paraffins

Galaxy star formation rate

Gas formation rate

Geologic formations, migration rates

HCHO formation rate

Heat release rate char formation

Hydrogen peroxide formation rates

Hydroxyl formation rate

Initial rates of formation

Iron formation, rate

Kinetics rates of formation

Lewis acid-base, rate complex formation

Maillard reaction formation rate

Methane formation rate

Methanol formation rate

Molecular orbitals product formation rate

Net rates of formation

Nitride formation rate

Nitrogen dioxide formation, rates

Oxide formation rate

Particle formation rate, emulsion

Particle formation, rate

Peak heat release rate char formation

Photochemical formation rate

Platinum catalysts methanol formation rate

Platinum methanol formation rate

Polymer formation chain growth rate

Product formation rate limiting step determination

Product formation rates, influencing

Product formation rates, influencing factors

Product formation, rate

Product formation, rate conversion from feed

Radical formation, rate

Rapid-rate methane formation

Rate constant tabulations complex formation

Rate constants for formation of semiquinones

Rate constants of formation

Rate constants, pyrazine formation

Rate determining step oxime formation

Rate laws acetaldehyde formation

Rate of carbamate formation

Rate of film formation

Rate of formation

Rate saturation precursor-complex formation

Rate-controlling step, chelate formation

Rate-limiting step, formation

Rate-limiting step, formation crystalline phase

Rates of methane formation

Reaction product formation rate

Reactions and reaction rate coefficients for the formation of water in star forming regions

Ring formation, relative rates

Second order rate constants enzyme-substrate complex formation

Species formation rate

Specific product formation rate

Specific production formation rate

Specific rate of product formation

Spray formation flow rate effects

Star formation cosmic rate

Sulfate formation rate

Thallium formation rate constants

Total rate of formation

Uranium hydride formation rate

Zinc complexes formation rate constants

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