NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts. Quarterly technical progress report, December 15, 1991--March 15, 1992 Page: 2 of 12
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QUARTERLY TECHNICAL PROGRESS REPORT
(Period December 15, '91 to March 15, '92
During this period, we focused our attention in analyzing the
magnetic nature of the extensively used trimetallic catalyst system
[1] Cu-Co-Cr for the production of higher alcohols. The catalytic
results of the IFP group [1] are summarized in the selectivity
phase diagram Fig. I.
The Cu/Co intermetallic ratio seems
to determine the product selectivity.
zc, / caC
In the cobalt rich field Cu/Co< 1,
hydrocarbons, in copper rich field
Cu/Co > 3, methanols and in the
S . \intermediate range alcohols are
reported to be the major products.
I / However, several investigators,
,c z ac "C 6c ac 7o c preparing catalysts following IFP
prescription found difficulty in reproducing IFP results [2]. It
is generally accepted that vot only the intermetallic ratio, but
the method of preparation - precipitation pH and temperature,
drying, calcination and reduction temperatures and duration, all
play significant roles in determining the catalytic behavior of the
system.
We believe that there could be some correspondence between the
catalytic and magnetic behaviors of the transition metal catalyst
systems. Both the morphology and metallic charge distribution of
the particles are known to govern the catalytic as well as the
magnetic properties of the system. Based on this concept, we have
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Murty, A. N. NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts. Quarterly technical progress report, December 15, 1991--March 15, 1992, report, May 4, 1992; United States. (https://digital.library.unt.edu/ark:/67531/metadc1318293/m1/2/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.