生物质资源脱碳制氢技术是实现CO2“负排放”的关键，也是最具前景的制氢方式之一，吸附增强重整反应是实现该技术的最佳途径。然而，当前吸附增强过程中的CO2以争议性的大规模封存进行处理，并且反应-吸附剂再生循环需要反复变温操作，严重阻碍其应用。本项目拟构建耦合C3H8干重整的生物天然气吸附增强重整制氢过程，吸附剂再生阶段以C3H8与碳酸盐的重整反应完成捕获CO2的原位催化转化，以同时实现高纯氢、丙烯生产和CO2负排放。重点研究吸附剂再生阶段捕获CO2（碳酸盐形式存在）的迁移与转化过程，并明确捕获CO2在固相碳酸盐中的扩散对再生阶段速控步骤的影响。最后，探索耦合过程等温操作的可行性。本研究将有助于突破目前生物质脱碳制氢的技术限制。项目研究成果将为生物质脱碳制氢技术的工业化应用提供理论指导，并为吸附增强重整技术的应用和CO2转化处理提供新途径。

The decarbonization and hydrogen production technology of biomass resources is the key to achieving the goal of “negative emission” of CO2. And it is also one of the most promising ways to produce hydrogen. Sorption-enhanced steam reforming reaction is the best way to achieve this technology. However, CO2 in the process is treated with controversial large-scale storage. And the current reaction-regeneration cycle in the process requires repeated temperature-changing operations. This seriously hinders its application. This project intends to construct a new coupling process of biogas sorption-enhanced reforming and C3H8 dry reforming (PDR). In the regeneration stage, C3H8 reformed with carbonate to complete in situ catalytic conversion of captured CO2. The coupling process realizes the process integration of simultaneous production of high-purity hydrogen and C3H6 and “negative emission” of CO2. The research focuses on the migration and conversion process of captured CO2 (existing in the form of carbonate) in the regeneration stage, and the impact of the diffusion of captured CO2 in the solid carbonate on the speed-determining step of regeneration stage. Finally, we will study the technical feasibility of the elimination of the temperature-changing operation. This study will help to break through the current technical limitations. The research results of the project provide theoretical guidance for the industrial application of biomass decarbonization and hydrogen production technology, and new ways for the application of sorption-enhanced reforming technology and CO2 treatment.