The biodiesel industry generates crude glycerol (CG) at the rate of 10% of the amount of biodiesel produced. With the production of this biofuel increasing, a large amount of CG is produced each year. This results in low price for it and its final disposal becomes a significant problem. Herein, steam reforming represents a viable route to valorize this biodiesel by-product into hydrogen. The performance of Ni–La–Zr catalysts (15 wt%) for steam reforming of a CG without any purification treatment has been investigated at atmospheric pressure and at 500 °C and 650 °C. These materials were prepared using a coprecipitation method with oxalic acid. At 650 °C, the catalyst calcined at 850 °C presents higher catalytic activity and stability and displays better resistance to deactivation by carbon formation than the catalyst calcined at 700 °C. This behavior can be attributed to several causes: higher surface nickel content, higher catalyst reducibility and the presence of oxygen vacancies formed as a consequence of the partial substitution of nickel atoms into the pyrochlore structure during the formation of the biphasic system, which is related to mechanisms that act in the removal of carbon deposits on the catalyst.

生物柴油行业以生产的生物柴油量的10％的速率生产粗甘油（CG）。随着这种生物燃料的生产增加，每年产生大量的CG。这导致其价格低廉，其最终处置成为一个重大问题。在此，蒸汽重整代表了将这种生物柴油副产物转化为氢的可行途径。Ni-La-Zr催化剂（15 wt％）在未经任何纯化处理的情况下用于重整CG的蒸汽重整性能已在大气压，500°C和650°C下进行了研究。这些材料是使用与草酸的共沉淀法制备的。在650°C下，与在700°C下煅烧的催化剂相比，在850°C下煅烧的催化剂具有更高的催化活性和稳定性，并且对碳形成失活表现出更好的抵抗力。