英语翻译This is quite clear exceptfor the case of 0.5 mL/min liquid flow rate and the smaller gasflow rate,where an inversion has been measured.The inverseis observed at large gas flow rate,where an increase of pressureapparentl

英语翻译This is quite clear exceptfor the case of 0.5 mL/min liquid flow rate and the smaller gasflow rate,where an inversion has been measured.The inverseis observed at large gas flow rate,where an increase of pressureapparentl
英语翻译
This is quite clear except
for the case of 0.5 mL/min liquid flow rate and the smaller gas
flow rate,where an inversion has been measured.The inverse
is observed at large gas flow rate,where an increase of pressure
apparently leads to a smaller production rate.In other words,
we can say that the gain in production rate of hydrogen peroxide
achieved with smaller liquid flow rates is reduced by a larger
pressure.
Results for selectivity at 20 bar are shown in Figure 8 and
compare with Figure 5 (10 bars).Interestingly,we always
measured a significant increase in selectivity with pressure
(particularly for the minimum and maximum liquid flow rates)
and a shift of the best operating conditions.The maximum
selectivity increases with liquid flow rate,approaching 80% of
2 mL/min,with a net gain of approximately 50% with respect
to 10 bar.As before,the highest selectivity is achieved at
conditions where the productivity is quite low.The maximum
of selectivity is reached with a lower gas flow rate at 20 bar,
compared to 10 bar,approaching mass flow rates comparable
to those of the 10 bar case.
Catalyst Stability.The stability of the catalyst has been
evaluated as described above.Results are shown in Figure 9,
where each point is the average of samplings at 4,10,and 16 h
within the same day.

英语翻译This is quite clear exceptfor the case of 0.5 mL/min liquid flow rate and the smaller gasflow rate,where an inversion has been measured.The inverseis observed at large gas flow rate,where an increase of pressureapparentl
除了05ml/分的液体流率以及较小的瓦斯流率之外,这已经很明朗了,在测量倒置的时候.在观察大型瓦斯流率倒置的时候,气压的增强会很明显的导致我们得到较小的生产效率.换句话说,在较大的气压下,减少较小的液体流率儿获得的过氧化氢生产率的增加.
我们比较图8里的柱形图20和图5的柱形图10其结果的选择性.有趣,我们一直在可选择性压强的条件下测量某个重要的增长（针对的是液体流率的最小与最大值）,以及在最佳操作条件下的转换.液体流率的最大选择性增加值,在2ml/分的时候能达到80%,柱形图10显示的是关于净收益大概为50%这样.之前,我们是在生产率相当低的条件下取得了最高的可选择性比率.柱形图20显示的是在一个较低的瓦斯流率情况下所取得的最大可选择性比率,比较图10那些所取得的质量流率案例.
催化剂的稳定性.
上文我们已经描述了经过评估过的催化剂的稳定性问题.结果显示如图9,我们在同一天的4点,10点,16点的时候对每个点都进行了平均取样.