化工专业英语翻译2determined with a Redlich-Kwong-Soave equation of state with Boston-Mathias modiﬁcation, through the Aspen Proper- ties code. The pressure inside the reactor is controlled and regulated with a back pressure controller (BPC; Brooks 5866

2019-11-27

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化工专业英语翻译2
determined with a Redlich-Kwong-Soave equation of state

with Boston-Mathias modiﬁcation, through the Aspen Proper-

ties code. The pressure inside the reactor is controlled and

regulated with a back pressure controller (BPC; Brooks 5866

series). A rupture disk is located before the BPC for safety

reasons. A bypass is used to achieve the desired pressure inside

the reactor more rapidly. The liquid phase is fed in through a

syringe pump (Teledyne ISCO model 500D), connected to a

pressure transducer and computer controlled. The syringe

temperature can be controlled. Gas and liquids mix at a

T-connection before the reactor. A regulation valve is used to

sample the instantaneous liquid phase, while a 1.5 L tank

provides gas-liquid separation, accumulating all the liquid

product. All the piping is made of stainless steel AISI 316, 1/8

in. size. The catalyst bed (0.5 cm long) is placed between two

quartz wool plugs. Above the upstream quartz wool plug, quartz

sand is used to improve mixing. Temperature inside the reactor

is measured with a K-thermocouple before the catalyst bed. The

apparatus is in a fume hood, with a H2 sensor that can

automatically switch off H2 ﬂow to the reactor.

H2O2 Experiments and Analyses. H2O2 decomposition and

hydrogenation were investigated ﬁrst, at 10 bar and -10 °C,

with 0.5% H2O2 in methanol as the liquid phase, varying its

ﬂow rate (0.5, 1, and 2 mL/min). The gas mixture was either

N2/CO2 (20/80% mol) for pure decomposition, or H2/N2/CO2

(2/18/80% mol) for hydrogenation experiments (N2 replaces O2),

varying its ﬂow rates (0.1, 1, 2, 2.7, 4, 6, 9,and 12 mL/min)

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