Abstract There are millions of tonnes of petroleum coke stockpiled worldwide, but to take advantage of this potential resource, a better understanding of how to activate this feedstock with less waste is required. The impact of steam addition during chemical activation of petroleum coke with a high sulfur content (~6.5 wt%) was evaluated with two chemical agents (KOH and NaOH), chemical molar ratios (from 0.12 to 1.02 or mass ratios from 0.5 to 3) and activation times (0 to 120 min) at 1073 K. Based on the yield and total pore volume developed, co-activation of KOH and steam was an effective way to reduce the amount of chemical agent required, while widening the pores from ~ 1 nm to up to 4 nm. In contrast, the addition of steam to the activation with NaOH resulted in less pore development and essentially no change in the pore size. At the activation conditions, there is likely a molten phase around the particles that slows steam gasification and has a composition that changes with the introduction of steam.

中文翻译：

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KOH或NaOH活化石油焦的化学药剂用量和蒸汽添加量的影响

摘要 世界范围内储存了数百万吨石油焦，但要利用这种潜在资源，需要更好地了解如何以更少的废物激活这种原料。用两种化学试剂（KOH 和 NaOH）、化学摩尔比（0.12 至 1.02 或质量比 0.5 至 3）评估了在高硫含量（~6.5 wt%）石油焦化学活化过程中添加蒸汽的影响1073 K 下的活化时间（0 到 120 分钟）。根据产生的产率和总孔体积，KOH 和蒸汽的共活化是减少所需化学试剂量的有效方法，同时将孔从 ~ 1纳米至 4 纳米。相比之下，在用 NaOH 进行活化时添加蒸汽导致孔隙发展较少，并且孔径基本上没有变化。