Particularly, for LaCoO3 (x = 1) the catalyst became inactive for the POM reaction.
From the size comparison with ferritins and Co-filled apoferritins, we also found that SWCNTs become thinner as the catalyst becomes smaller.
Plasma activation leads to CO as a main product, which then however oxidises to CO2 when the catalyst becomes active (>300 °C).
However, when the zeolite crystallinity or microporosity of ZSM-5 was decreased too much from excessively severe alkaline treatments (NaOH concentration > 0.3 M), deactivation of the catalyst became again faster.
It is shown that, under a certain combination of catalytic activity and channel length, the absolute temperature rise across the catalyst becomes essentially independent of pressure, a feature highly desirable for many practical systems.
Thus, the surface of the catalyst becomes positively charged at lower pH, but at higher pH, it becomes negatively charged.
But, the catalyst became difficult to be reduced and had no obvious improvement in the pore distribution.
The catalyst became difficult to restore as shown in Fig. 10, and the CO2 conversion was reduced at high temperature.
Although the deactivation rate was significant during the first few minutes, the activity of the catalyst became reasonably stable after about 2 days.
The results showed that the ring opening increases either by adding a higher amount of catalyst to the system or by decreasing the particle size of the catalyst since, in both cases, the external area of the catalyst becomes larger.
