Na2CO3, all supplied by Sinopharm Chemical Reagent
Co., Ltd. were used for the preparation of the NiyAlOx formulations. A Ni–Al
alloy (50:50 w/w) supplied by J&K Chemical Co., Ltd. was used
for preparing RaneyNi. FF, 4-anisaldehyde, 4-chlorobenzaldehyde, vanillin,
butyraldehyde, 1-butylamine, 2-butylamine, cyclohexanone, cyclohexylamine,
butanone, ethanolamine, aniline, benzylamine, and morpholine were
also supplied by Sinopharm Chemical Reagent Co., Ltd. HMF, FMA, THFMA,
FAA, and THFAA were procured from Shanghai Shaoyuan Co., Ltd. Glycolaldehyde
was purchased from Ark Pharm, Inc. Dioxane, ethanol and aqueous ammonia
solution (28 wt %) were purchased from Damao Chemical Reagent Factory.
Hydrogen was obtained commercially from Lanzhou Yulong Gas Co., LTD.
All the chemicals were used as received without further purification.