Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Cooling using shaped pulses

The dispersion of Pt was determined from the amount of chemisorbed CO using pulse method. The experiments were carried out using a (Micromeritics 2910 AutoChem) instrument. The Pt modified catalysts were reduced with hydrogen in a U- shaped quartz tube and then cooled to 313 K under flow of He and CO pulse chemisorption was performed. More detail description of the R dispersion can be found in reference [11], The dispersion of R measured by CO chemisorption was the highest for R-MCM-41 catalyst prepared by ion-exchange method Table 1. [Pg.405]

To detect the X-rays emerging from the sample, a solid state Si(Li) detector, cooled to liquid nitrogen temperature, is used to detect the characteristic X-rays. The detector has a resolution of about 160 eV at 5.9 keV. The pulses from the detector are processed by a shaping amplifier and converted into pulse height by the analog-to-digital converter (ADC) of the multichannel analyzer (MCA). [Pg.15]


See other pages where Cooling using shaped pulses is mentioned: [Pg.308]    [Pg.308]    [Pg.326]    [Pg.149]    [Pg.84]    [Pg.73]    [Pg.387]    [Pg.925]    [Pg.572]    [Pg.84]    [Pg.57]    [Pg.538]    [Pg.1365]    [Pg.558]    [Pg.34]    [Pg.256]    [Pg.260]    [Pg.209]    [Pg.112]    [Pg.60]    [Pg.678]    [Pg.319]    [Pg.204]    [Pg.69]    [Pg.175]    [Pg.439]    [Pg.743]    [Pg.197]    [Pg.678]    [Pg.549]    [Pg.189]    [Pg.197]    [Pg.16]    [Pg.1097]    [Pg.325]    [Pg.678]    [Pg.1302]    [Pg.106]    [Pg.336]    [Pg.298]    [Pg.498]   
See also in sourсe #XX -- [ Pg.308 ]




SEARCH



Pulse shape

Shaped pulse

© 2024 chempedia.info