Lignin Derived Mesoporous HZSM-5 for Enhanced Plastic Recycling via Catalytic Pyrolysis Zeolignin II

Purpose and goal

To utilize lignin a renewable byproduct to produce low-cost zeolites. The work will focus on improving the mesopore-forming effect and its application in plastic pyrolysis, in addition to expanding the understanding of the effect of lignin structure on the ZSM-5 pore distribution and efficiency to obtain desired product composition. A hydrotreatment post treatment will also be introduced to fulfil the product requirements. The entire value chain, from lignin production, zeolite synthesis, plastic waste pyrolysis, and hydrotreatment of the pyrolysis oil will be demonstrated.

Expected effects and result

We expect the project to lead to highly selective ZSM-5 zeolites produced using lignin as a sustainable low-cost mesoporous-forming agent for plastic pyrolysis. The expectation is to shift the SRL from 3 to 4 and the MRL from 3 to 4. We aim to further enhance the technology readiness level from the current 3-4 to 4-5 by performing the suggested development tasks.

Planned approach and implementation

·WP1 Project management ·WP2 Production of suitable lignin ·WP3 Production of ZSM-5 with optimum mesopores distribution using lignin as a template for mesopores formation ·WP4 Increase the selectivity of the liquid hydrocarbons using produced and catalyst lifetime assessment: deactivation rate, regeneration conditions and efficiency, performance, and number of regeneration cycles ·WP5 Produce pyrolysis oil, with or without hydrotreatment, with acceptable steam cracker feedstock requirements.