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GENERAL EXPERIMENTAL PROCEDURE

General Experimental Procedures. Charge 1.0 eq. of substrate, 0.005 eq. or less catalyst, 8 volumes of dichloromethane, 8 volume of methanol. Purge the system three times each with nitrogen and hydrogen. Maintain the temperature at 25°C and hydrogen pressure at 45 psig, until the reaction is deemed complete. [Pg.33]

The general experimental procedure employed in the study here has been described previously (7), thus only a brief overview is presented here. For all experiments, 45 mL deionized water and catalyst (50 mg Pd-black for 3-buten-2-ol and 25 mg for l,4-pentadien-3-ol) were added to the reaction cell. For ultrasound-assisted, as well as stirred (blank) experiments, the catalyst was reduced with hydrogen (6.8 atm) in water for 5 minutes at an average power of 360 W (electrical 90% amplitude). The reagents (320 mg 3-buten-2-ol or 360 mg l,4-pentadien-3-ol) were added to the reduced catalyst solution to achieve... [Pg.304]

General experimental procedure for the copper-catalyzed alkylation of an acylzirconocene... [Pg.143]

General experimental procedure for preparation of Mosher esters 271... [Pg.171]

Zeolite membranes are generally synthesized as a thin, continuous film about 2-20 xm thick on either metallic or ceramic porous supports (e.g., alumina, zirco-nia, quartz, siHcon, stainless steel) to enhance their mechanical strength. Typical supported membrane synthesis follows one of two common growth methods (i) in situ crystallization or (ii) secondary growth. Figure 10.2 shows the general experimental procedure for both approaches. [Pg.309]

The general experimental procedures used needed to conform to those generally reported around the country. [Pg.519]

General Experimental Procedures MPLC fractionation was performed using an Isco CombiFlash, and HPLC isolation was performed using Shimadzu pumps and detector and YMC-Pack ODS-AQ C18 column. [Pg.9]

Photochemical Experiments. The general experimental procedure was that previously described (15). The bolometer was used as a relative intensity indicator since collimation in the cylindrical geometry of an AH6 lamp is poor, and allowance for scattering is difficult. Calibration at each wave length was by means of KCr(NH3)2(NCS)4 solutions for which we now have accurate absolute quantum yields for wave lengths from 450 m/x to 750 m/x (16). For the runs at >680 m/x, a 500 watt tungsten lamp was used since the output of the AH6 mercury lamp was uncomfortably low at this wave length. [Pg.240]

General Experimental Procedures. H-nmr and C-nmr spectra were recorded on a Varian XL-200 spectrometer, -nmr spectra were obtained in CDCI3, and 13C-nmr spectra in DMSO-dg. [Pg.210]

General Experimental Procedure. A mixture of the amine, 0.1 mole in 250 cc. of absolute alcohol, with 10 g. of sulfuric acid and 28 g. of arseni-ous chloride, cooled to 0°, is diazotized with a saturated aqueous solution of the calculated amount of sodium nitrite (starch-iodide end point). Then, and not before, 1 g. of cuprous bromide is added the mixture is thoroughly stirred, warmed to 60° until no more nitrogen is evolved, and then distilled with steam. The separated arsonic add is recrystallized. [Pg.425]

When attempting to use these polymer interface theories (1-22) in planning and interpreting experiments, we encounter two problems associated with the interaction parameter in polymer-polymer systems. First we have to find a way of determining the values of the interaction parameters for the polymer pairs of interest. There is as yet no general experimental procedure which allows us evaluation of the x parameter. Without reliable values of the x parameter, comparative tests of the competing theories can only be made qualitatively. Secondly, to be able to use these theories with more confidence we have to have some idea about the dependence of the x parameter on concentration, temperature, etc. [Pg.588]

For some years, the American Chemical Society journals, including J. Am. Chem. Soc. and J. Org. Chem., have provided supplementary material for some of their papers. This material is available on-line, and for older literature from the Microforms and Back Issues Office at the ACS Washington, DC, office, either on microfiche or as a photocopy. Many other journals now offer supplementary material, generally experimental procedures, supporting spectral data and crystallographic data. These practices have not yet succeeded in substantially reducing the total volume of the world s primary chemical literature. [Pg.1875]

The reactor system and general experimental procedures were similar to those described by Zmcevic et al. [11] and are discussed in detail in our former paper [12]. Deactivation measurements were carried out in an isothermal fixed-bed reactor with a hydrogen partial pressure of 99.82 kPa, benzene partial pressure of 7.55 kPa, thiophene partial pressure of 0.032 kPa and reaction temperatures fi om 403 to 473 K. The size of commercial cylindrical catalyst pellets suppli by BASF was 5x5 mm (21% Ni on alumina). The catalyst was activated by reduction with hydrogen at 743 K for 10 h. [Pg.488]

In addition to the theoretical implications of this research, there is also a practical advantage to the use of the general experimental procedures described above. Studies which examine the effects of a treatment on memory processing are perhaps best suited to do so if the treatment is administered shortly after training. This design assures that all animals... [Pg.30]


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Experimental procedures

General Experimental

General procedures

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