Selectivity regeneration

Ion exchange. In general very selective. Regeneration of the ion exchange media is necessary, as is treatment of the concentrate... 

The acetoxylation reaction is carried out at 70°C under 70 atm pressure by reacting 1,3-butadiene and acetic acid in the presence of air and a small amount of polymerization inhibitor. A special three-step activation (reduction-oxidation-reduction), also used in regeneration of the used catalyst, ensures high activity and selectivity. Regeneration of the catalyst is necessary after about one year of operation. 

Process Liquid or gas phase" Adsorbent Selectivity Regeneration method... 

In the third and outer loop, the program adjusts a user-selected regenerator variable to satisfy the heat balance in the catalyst regenerator. 

Microwave-promoted selective regeneration of carbonyl compounds from oximes has been carried out using... 

R1r2nS02At and R N(S02Ar)2 Deposited polythiophenes Chemical synthesis at solid interfaces with convenient and selective regeneration of amines [36]... 

Cumene synthesis Dealuminated mordenite MCM-22 beta Y omega Lower inputities Transalkylation function Lower benzene-to-propylene ratio allows higher capacity, great unit efficiency High selectivity Regenerable, non-hazardous, non-corrosive... 

This paper follows the evolution of the imidazolinone-resistant hybrid corn project at American Cyanamid. The initial considerations that provided the rationale for the project are discussed. The selection, regeneration, and characterization of the herbicide-resistant plants is described. Finally, options for commercializing the herbicide-hybrid package are discussed. 

Adsorbent selection criteria for any application generally include the following main attributes capacity, selectivity, regenerability, kinetics, durability, and cost. These attributes represent combinations of properties that are strongly affected by the pertinent conditions. For example, the first four govern how much adsorbent is necessary for a particular application, and the last two affect the annual cost. Furthermore, the first three are tied to the equilibrium characteristics, about which much can be said (see Section 14.3). Likewise, kinetics is covered in more detail in Section 14.4. Both will be discussed briefly here, however. Finally, adsorbent cost obviously depends on both its price and lifetime, which can depend on its resistance to attrition, degradation, fouling, and so on. 

This reduction system also provides an alternative choice for the selective regeneration of alcohols from the corresponding allylic ethers, while nitro, ester, carbamate, and acetal groups maintam intaction under the reaction conditions (eq TS). ... 

Process Liquid (1) or Gas Phase (G) Adsorbent Selectivity Regeneration Method... 

Chapter 2 provides a simple formula for calculating the basic forces or potentials for adsorption. Thus, one can compare the adsorption potentials of two different molecules on the same site, or that of the same molecule on two different sites. The calculation of pore size distribution from a single adsorption isotherm is shown in Chapter 4. The effects of pore size and shape on adsorption are discussed in both Chapters 2 and 4. Chapter 3 aims to provide rules for sorbent selection. Sorbent selection is a complex problem because it also depends on the adsorption cycle and the form of sorbent (e.g., granules, powder, or monolith) that are to be used. The attributes sought in a sorbent are capacity, selectivity, regenerability, kinetics, and cost. Hence, Chapter 3 also includes a summary of equilibrium isotherms, diffusion steps, and cyclic processes. Simple sorbent selection criteria are also presented. 

Selective regeneration bottom plates Supplement complete minimal (CM) dropout plates (see below) with 1 M sorbitol and lx adenine hemisulfate solution. Autoclave and store plates at 4°C. 

Selective regeneration top agar Supplement CM dropout plates with 1 M sorbitol, lx adenine hemisulfate solution, and bacto agar up to 3% (w/v). Autoclave and store at room temperature. 

During the incubation in step 22, add 8 ml equilibrated selective regeneration top agar to a 15-ml tube. Keep tube in a 55°C water bath. 

Add cells to the 8-ml selective regeneration top agar, invert three times, and then pour onto a selective regeneration bottom plate (see Note 13). 

During the 40-min incubation (step 8), prewarm the selective regeneration bottom plates at 37°C, melt (by microwave), and then equilibrate the selective regeneration top agar to 55°C. 

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