请将以下段落以学术的方式翻译成英文：然而针对磁性凹凸棒土并将其应用于烟气脱汞的研究仍然不多。此外由于凹凸棒土本身含有较多杂质还存在相关活性物质分散性较差利用率较低脱汞性能有限等问题

However, there has been limited research on the application of magnetic corrugated clay rods for mercury removal from flue gas. Additionally, due to the high impurity content and poor dispersion of relevant active substances in corrugated clay rods, their utilization efficiency and mercury removal performance are limited.