Hybrid catalysts were prepared using well-defined, colloidal Cu/Zn-based nanoparticles as building units. The nanoparticles were immobilized on acidic supports (i.e., γ-Al₂O₃, HZSM-5, and HY) to yield a series of bifunctional catalysts with a close proximity of active sites for both methanol synthesis and its further conversion to dimethyl ether (DME) or hydrocarbons (HCs). By this model kit principle, a high comparability of the bifunctional catalysts was ensured. The catalysts were characterized in depth regarding their structure and catalytic performance in the conversion of CO-rich synthesis gas. In situ XAS studies demonstrated the formation of the active phase under reducing conditions. The present study revealed important material parameters to control activity and selectivity of the bifunctional catalysts either towards DME or liquefied petroleum gas (LPG) products in the direct conversion of simulated biomass-derived synthesis gas. In particular, Cu loading, pore structure and Si:Al ratio were investigated.

杂化催化剂是使用定义明确的胶体基于Cu / Zn的纳米粒子作为构建单元制备的。将纳米颗粒固定在酸性载体（即，在γ-Al ₂ ö ₃，HZSM-5，和HY），得到一系列双官能催化剂的活性位点的两种甲醇合成靠近并且其进一步转化为二甲醚（ DME）或碳氢化合物（HCs）。通过这种模型试剂盒原理，确保了双功能催化剂的高度可比性。深入表征了催化剂的结构和在富CO合成气转化中的催化性能。原位XAS研究表明，在还原条件下会形成活性相。本研究揭示了在直接转化模拟生物质衍生的合成气中，控制双功能催化剂对DME或液化石油气（LPG）产物的活性和选择性的重要材料参数。特别地，研究了Cu负载，孔结构和Si：Al比。