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heaven-ln

金虫 (正式写手)

有时间给你查~~
11楼2010-01-07 18:31:28
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思危

银虫 (正式写手)

去文献求助板块。
永存梦想!!!
12楼2010-01-07 18:37:54
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life1991

金虫 (小有名气)


zyp2886(金币+1,VIP+0): 1-8 09:14
文献子版可以求助想关信息
13楼2010-01-07 19:28:17
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水中蝶

木虫 (正式写手)

zyp2886(金币+5): 2010-02-27 18:14
专利文献:
Para-terphenyl prepn - by pyrolysis of phenol vapour in an inert gas
专利号: ~SU438244-A
专利权人和代码:SIB ORG CHEM AS(ASIO-Soviet Institute)
Derwent 主入藏号: 1975-55105W [20]
摘要: To increase the yield, p-terphenyl is prepd. by pyrolysis of phenol vapour in a quartz tube at 750 degrees C in a stream of an inert gas. The title cpd. is used in the prodn. of fluorescent and luminescent compsns. and photoemulsions, in the mfr. of thermoactive soluble polyphenylenes and as an intermediate in organic synthesis. The pyrolysis gives p-terphenyl as the main prod. (53% yield) with benzene, water, CO, H, CO2, CH4 and carbonaceous residue as by-prodts. Thus, 35.0g (0.37 mole) phenol was brought to the boil in an evaporator and the vapour was passed through a quartz tube reactor at 750 degrees C in nitrogen at 3-5 l/hr. Unreacted phenol and by-prods. were condensed and recycled into the evaporator. The reaction was continued for 5 hrs. Vacuum distn. of the prodt. gave 2.1g. phenol and 9.0g. (53% w.r.t. phenol) p-terphenyl. The by-prodt. gases contained (%) CO 41.1, H2 5.2, CO2 26.3, and CH4 12.5.

应该就是这篇了
14楼2010-01-28 14:27:23
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Sary

金虫 (小有名气)

我查不到、。。
唯有付出,才有收获!Comeon,Baby!
15楼2010-01-28 14:29:44
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dgchan

新虫 (小有名气)

顶一个,不用发金币给我
资源共享~~与君共勉
16楼2010-01-28 14:30:48
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