Parr Instrument Series 3900 - Manual (Page 14)

Hydrogenation Apparatus
P a r r I n s t r u m e n t C o m p a n y 14
Bottle Heater
The 71CA one liter bottle, 72CA two liter bottle
and the A129CA3 stainless bottle assembly may
be heated in the 3921 Hydrogenator by wrapping
a glass fabric heating mantle (A451E) around the
bottle. No special fi ttings are needed for attaching
this heater. Simply wrap the mantle tightly around
the bottle and run the connecting cord through the
slot in the top housing. Use the plastic clip furnished
with the heater to anchor the cord to the top edge of
the bottle clamp: then run the cord out laterally on
the axis of the shaker, arranging it to avoid exces-
sive fl exing when the shaker is operating.
Note: Connect cord to temperature controller
to control operations of heater. See page 10 for
instructions on Parr’s temperature controller and
thermocouple.
The 72CA4 heavy wall bottle should not be used
with the heating mantle because the heat will de-
stroy the protective polyvinyl coating on the bottle.
Temperature Measurement
Temperatures in the reaction bottle can be mea-
sured by installing a stainless sheathed thermo-
couple using the same fi ttings described for the 3911
Hydrogenator on page 10, but with a longer sheath
on the thermocouple to match the larger bottles. The
various assemblies are identifi ed in the Parts List on
page 30.
References
No attempt is made here to list the hundreds of
references to the Parr hydrogenator which have ap-
peared in chemical literature since Dr. Roger Adams
published his fi rst paper describing an apparatus of
this kind in 1923. More than fi ve hundred literature
references are cited in Augustine’s book on Catalytic
Hydrogenation which is listed below. Additional
references can be obtained from other books in
this list. Among these, the books by Augustine,
Freifelder and Rylander will be particularly help-
ful to those users who want additional information
regarding hydrogenation techniques, catalysts and
procedures for treating specifi c functional groups.
The following references are therefore highly rec-
ommended:
R.L. Augustine, Catalytic Hydrogenation, Marcel
Dekker, Inc.: New York , 1965.
Morris Freifelder, Practical Catalytic Hydrogenation,
Wiley-Interscience Div. of John Wiley & Sons, Inc.:
New York, 1971.
Gilman-Blatt, Organic Synthesis, Collective Volume I,
p. 65, John Wiley & Sons, Inc.: New York, 1948.
H.W. Lohse, Catalytic Chemistry, Chemical Publish-
ing Co., Inc.: New York, l945.
Paul N. Rylander, Catalytic Hydrogenation Over
Platinum Metals, Academic Press: New York, 1967.
Paul N. Rylander, Catalytic Hydrogenation in Organic
Synthesis, Academic Press: New York, 1979.
Paul N. Rylander, Hydrogenation Methods, Academ-
ic Press: New York, 1985.
Biennial conferences originally held at the New York
Academy of Sciences and now in a variety of loca-
tions by ORCS (Organic Reaction Catalysis Society)
in even-numbered years starting in 1966 have pro-
duced excellent collections of papers under the gen-
eral title, Catalytic Hydrogenation and Analogous
Pressure Reactions. The initial set is published in the
Annals of The New York Academy of Sciences, Vol.
145, Art. 1, pp. 1-206, 1967. Currently titled Catalysis
of Organic Reactions published by Marcel Dekker,
Inc.: New York.