One-step synthesis of Ru/montmorillonite composite from gel system of RuCl3-Na2O-ZnO-Al2O3-SiO2-F-H2O and applications in nitrobenzene hydrogenation catalysis
Source abstract
Abstract
Abstract One-step synthesis of Ru/montmorillonite (Ru/Mt) without using any organic ligands has been successfully implemented from a gel system of RuCl3-Na2O-ZnO-Al2O3-SiO2-F−–H2O, and the catalytic application was demonstrated in the hydrogenation of nitrobenzene (NB). The synthesized materials were characterized by X-ray diffraction, infrared spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Due to the particular structure of which Ru(0)-nanoparticles were encapsulated by clay layers, the catalytic activity of Ru/Mt. was found to experience no significant deactivation after runs of reactions. The catalytic performance of Ru/Mt. was determined as a function of Ru loading amount with respect to NB. The conversion of NB to aniline was found to reach 99.42% within 2.0 h (PH2 = 5.0 Pa; T = 90 °C), and the turnover frequency was higher than activated carbon- or Al2O3-supported- ruthenium catalysts (Ru/AC, Ru/Al2O3). The method has its priority in getting pure clay supports, and high catalytic activity was obtained by avoiding the paramagnetic ions from natural clays.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Catalytic Processes in Materials Science · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. The lower-pressure stability of glaucophane in the presence of paragonite and quartz in the system Na2O-MgO-Al2O3-SiO2-H2O10.2138/am.2012.3931 ↗
2. P-type macroporous silicon for two-dimensional photonic crystals10.1063/1.1515127 ↗
3. Brindley · 1980
4. The stability of antigorite in the systems MgO-SiO2-H2O (MSH) and MgO-Al2O3-SiO2-H2O (MASH): the effects of Al3+ substitution on high-pressure stability10.2138/am-2003-0113 ↗
5. Ru-MOF enwrapped by montmorillonite for catalyzing benzene hydrogenation10.1016/j.clay.2015.07.011 ↗
6. Visible light emission from macroporous Si10.1016/j.optmat.2005.06.021 ↗
7. Ultrafine clay minerals of the pleistocene olorgesailie formation, southern Kenya rift: diagenesis and paleoenvironments of early hominins10.1346/CCMN.2010.0580301 ↗
8. Catalytic syntheses of aromatic amines10.1016/S0920-5861(97)00005-9 ↗
9. Design of ruthenium/iron oxide nanoparticle mixtures for hydrogenation of nitrobenzene10.1039/C4CY01277A ↗
10. Synthetic allophane and layer-silicate formation in SiO2-Al2O3-FeO-Fe2O3-MgO-H2O systems at 23°C and 89°C in a calcareous environment10.1346/CCMN.1991.0390601 ↗
11. Hk-Ordering in aluminous nontronite and saponite synthesized near 90°C: effects of synthesis conditions on nontronite composition and ordering10.1346/CCMN.1994.0420208 ↗
12. Textural and hydration properties of a synthetic montmorillonite compared with a natural Na-exchanged clay analogue10.1016/j.clay.2009.11.038 ↗
13. Interaction of a cationic surfactant with bentonite: a colloid chemistry study10.1007/s00396-002-0759-z ↗
14. Synthesis of smectite clay minerals-a critical review10.1346/CCMN.1999.0470501 ↗
15. Catalysts for the hydrolysis of aqueous borohydride solutions to produce hydrogen for PEM fuel cells10.1016/j.apcatb.2007.07.024 ↗
16. Organometallic ruthenium nanoparticles: a comparative study of the influence of the stabilizer on their characteristics and reactivity10.1002/cctc.201200666 ↗
17. D-Glucose hydrogenation/hydrogenolysis reactions on noble metal (Ru, Pt)/activated carbon supported catalysts10.1016/j.cattod.2014.12.006 ↗
18. Controlled and chemoselective hydrogenation of nitrobenzene over Ru@C60 catalysts10.1021/acscatal.6b01429 ↗
19. Nitrobenzene hydrogenation with carbon nanotube-supported platinum catalyst under mild conditions10.1016/j.molcata.2004.09.046 ↗
20. Organometallic ruthenium nanoparticles: synthesis, surface chemistry, and insights into ligand coordination10.1021/acs.accounts.7b00378 ↗
21. The poisoning of metallic catalysts
22. Synthesis and characterization of mesoporous aluminosilicate molecular sieve from K-feldspar10.1016/j.micromeso.2005.05.006 ↗
23. Synthesis and characterization of ZnS-montmorillonite nanocomposites and their application for degrading eosin B10.1016/j.jcis.2006.04.080 ↗
24. Ru nanoparticles immobilized on montmorillonite by ionic liquids: a highly efficient heterogeneous catalyst for the hydrogenation of benzene10.1002/anie.200502632 ↗
25. Hydrogen adsorption and diffusion in synthetic Na-montmorillonites at high pressures and temperature10.1016/j.ijhydene.2014.12.038 ↗
26. Hydrothermal Synthesis of montmorillonite type silicates. III. Synthesis of Zinc-Montmorillonite10.1246/nikkashi1948.75.456 ↗
27. Intercalated clay catalysts10.1126/science.220.4595.365 ↗
28. Fluid compositions in equilibrium with silica-undersaturated magmas in the system Na2O-Al2O3-SiO2-H2O: clues to the composition of fenitizing fluids10.1007/s00410-002-0414-1 ↗
29. Ru-, Rh-, and Pd-catalyzed C-C bond formation involving C-H activation and addition on unsaturated substrates: Reactions and mechanistic aspects10.1021/cr0104330 ↗
30. Efficient clay supported Ni-0 nanoparticles as heterogeneous catalyst for solvent-free synthesis of Hantzsch polyhydroquinoline10.1016/j.catcom.2011.12.013 ↗
31. The solvent-free selective hydrogenation of nitrobenzene to aniline: an unexpected catalytic activity of ultrafine Pt nanoparticles deposited on carbon nanotubes10.1039/c002391d ↗
32. Vogel · 2013
33. "Metal-free" catalytic oxygen reduction reaction on heteroatom-doped graphene is caused by trace metal impurities10.1002/anie.201309171 ↗
34. Selective catalytic reduction of nitric oxide by hydrogen over Zn-ZSM-5 and Pd and Pd/Ru based catalysts10.1016/j.apcatb.2014.01.036 ↗
35. Study on the nitrobenzene hydrogenation over a Pd-B/SiO2 amorphous catalyst10.1016/S0926-860X(00)00454-3 ↗
36. Preparation of highly dispersed Ru/Mt catalyst and its catalytic activity for quinoline hydrogenation