SusChEM: Collaborative Research - Granular Activated Carbon Supported Gold and Palladium Bimetals Catalysts for Sustainable Water Treatment

1507707 Jiao 1508115 TratnyekA研究小组建议开发颗粒状活性炭负载的催化剂，该催化剂结合了物理吸附和催化分解能力，以实现可持续的水处理。该项目的目标是设计和制造一种新型的颗粒状活性炭负载的钯金属（Pd-metal）催化剂，该催化剂提供快速的污染物降解，而不会积累有问题的副产物或对中毒的显著敏感性该项目利用了钯（Pd）催化加氢脱卤和加氢脱氧的优点，和Pd基催化剂能够将各种类型的有机污染物转化为无害的产物，本提议的研究集中于开发Pd-M催化剂，其中M代表金（Au）、铜（Cu）和铟（In），以实现优先饮用水污染物如卤代有机物、含氧阴离子和亚硝胺的催化还原转化。PI的初步结果表明，建议研究的催化剂类型可以产生非常快速的三氯乙烯加氢脱卤以及其他模型污染物的加氢。本研究将开发一种绿色化学合成工艺。催化剂结构和性能之间的联系将被系统地研究与催化剂设计测试特定的催化机制。Pd-M的结构与完美的石墨烯和缺陷丰富的石墨烯在颗粒状活性炭的地方杂化将被建模，以确定最佳的表面结构，电荷转移机制，电子性质，和能量分布。将系统地量化这种催化剂减少污染物的动力学，并将开发一个实用但严格的动力学模型，以在广泛的条件下比较这些类型的催化剂。这些催化剂对贵金属催化剂的已知毒物（例如，硫化物和氯化物）将在催化剂设计的优化中进行评估和考虑。除了通过催化加氢工艺推进水处理技术外，这项拟议的研究将有助于培训该领域的新研究人员和从业人员。PIS将通过在Clackamas社区学院举办的一系列计划中的研讨会与水服务专业人员接触，该学院为水处理工程师提供了强大的培训计划。还计划与当地非正规教育的领导者俄勒冈州科学工业博物馆合作，向公众开展外联活动，展示可持续的水处理。此外，我们致力于招募少数民族和女性研究生参加这项拟议的研究。

1507707Jiao1508115TratnyekA team of researchers propose to develop granular activated carbon supported bimetal catalysts that integrate both physic-sorption and catalytic decomposition capabilities to achieve sustainable water treatment. The objective of the proposed project is to design and fabricate a novel class of granular activated carbon-supported palladium-metal (bimetal) catalysts that provides rapid contaminant degradation without accumulation of problematic by-products or significant susceptibility to poisoning (loss of catalytic activity) by common components of natural water.This project takes advantage of the fact that catalytic hydrodehalogenation and hydrodeoxygenation by palladium (Pd) and Pd-based bimetal catalysts are capable of transforming various classes of organic contaminants to harmless products, this proposed research is focused on developing Pd-M bimetal catalysts where M represents gold (Au), copper (Cu), and indium (In) to achieve catalytic reductive transformation of priority drinking water contaminants such as halogenated organics, oxyanions, and nitrosamines. The PIs preliminary results show that the types of catalysts proposed to study can produce very rapid hydrodehalogenation of trichloroethene as well as hydrogenation of other model contaminants. In the proposed research, a green chemistry synthesis process will be developed. The link between catalyst structure and performance will be systematically investigated with catalysts designed to test specific catalytic mechanisms. Structures of Pd-M hybridized with both perfect graphene and defect-rich graphene in place of granular activated carbon will be modeled to determine the optimal surface structures, charge transfer mechanisms, electronic properties, and energetic distributions. The kinetics of contaminant reduction by such catalysts will be systematically quantified and a practical but rigorous kinetic model will be developed to compare these types of catalysts across a broad range of conditions. The sensitivity of these catalysts to inactivation by known poisons of noble metal catalysts (e.g., sulfide and chloride) common in water treatment will be evaluated and considered in optimization of the catalyst designs. In addition to advancing the technology of water treatment by catalytic hydrogenation processes, this proposed research will contribute to the training of new researchers and practitioners in the field. The PIS will reach out to water service professionals through a series of planned workshops at Clackamas Community College, which has a strong training program for water treatment engineers. Outreach activities to the general public for the demonstration of the sustainable water treatment through collaboration with the Oregon Museum of Science & Industry, a local leader in informal education, are also planned. Furthermore, we are committed to recruiting minority and female graduate students to participate in this proposed research.