Mixed alcohols synthesis from syngas over activated palygorskite supported Cu–Fe–Co based catalysts

Effects of Cu/Fe ratio on structure and performance of attapulgite supported CuFeCo-based catalyst for mixed alcohols synthesis from syngas

“…The Cu 5.2 Fe 4.8 catalyst shows the highest shoulder peak intensity, implying that the dispersion of CuFe 2 O 4 was effectively improved by the strongest Cu-Fe interaction. However, the main peak temperature is also relatively high at 335 • C. This can be explained by our previous conclusion that the catalytic active components are well dispersed on surface of ATP-B21 support with coverage of plentiful amorphous reactive silica, thus resulting in the enhancement of the interaction of metal-support and the increase of reduction temperature because of restraining reduction of metallic oxides [25]. The Cu 3 Fe 7 catalyst presents the lowest main peak temperature at 309 • C and weak shoulder peak intensity.…”

“…21 wt% H 2 SO 4 -activated attapulgite (ATP-B21) was prepared according to the method in our previous work [25] and used as catalyst support. During the preparation process, ATP-B21 was only dried at 105 • C overnight without further calcination.…”

“…[23,24]. In our previous study [25], for the first time, we developed a series of H 2 SO 4 -activated ATP supported Cu-Fe-Co based catalyst and applied them to MAS reaction. The results showed that mixed alcohols can be effectively synthesized over the CFCK/ATP-B21 catalyst due to high surface concentration of Cu-FeC x dual site and the ideal interaction between Cu and Fe species.…”

Hydrogen Production from Steam Reforming of Acetic Acid over Ni-Fe/Palygorskite Modified with Cerium

“…Raw PG was fibrous or clubbed structure in its surface, every fiber or rod was smooth, and there were some small ravines present among different ribbons and interlaminations. Thus, the unique structure of PG could supply a high specific surface area (145 m 2 ·g -1 , as shown in Table 1) (Guo et al 2015). Figure 3b shows that the surface of NF/C0.4PG0.6 sample was relatively rougher than the raw PG.…”

“…Among them, Palygorskite (PG), also called attapulgite, has obtained more and more attention in recent studies, which is mainly because it is a natural nonmetallic mineral with a 1-D fibrous morphology and has a unique porous crystalline structure containing tetrahedral and octahedral layers. In addition, due to its special structure, low cost, and easy availability, PG clay is widely applied in chemicals, surface coating, and catalysis Laosiripojana et al 2014;Guo et al 2015). Cao et al (2008) studied low-temperature CO oxidation over a series of CuO supported on PG catalysts, which showed interesting catalytic activity compared with the reported TiO2, Fe2O3, and Ce0.8Zr0.2O2 supported CuO catalysts.…”