Stability and kinetic studies of MOF‐derived carbon‐confined ultrafine Co catalyst for sodium borohydride hydrolysis

Xu, Dongyan; Zhang, Xinyan; Zhao, Xi; Dai, Ping; Wang, Chuansheng; Gao, Jun; Liu, Xien

doi:10.1002/er.4524

Cited by 44 publications

(7 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was reported that the solid metal‐based materials are more active catalysts for hydrogen production via hydride hydrolysis. [ 53 ]…”

Section: Resultsmentioning

confidence: 99%

Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Abdelhamid

2021

Applied Organom Chemis

View full text Add to dashboard Cite

Hydride materials have good performance for hydrogen (H2) gas storage and release. The release of H2 gas from hydrides via the hydrolysis process can be improved or controlled using a catalyst. Herein, benzoic acid (BA) and hexamethylenetetramine (HMTA) modulate the synthesis of hierarchical porous zeolitic imidazolate framework‐8 (HFZIF‐8, Zn‐based metal organic frameworks [MOFs]), ZIF‐67 (Co‐based MOFs), and leaf‐like ZIF (ZIF‐L). The mechanistic study for the synthesis procedure of ZIF‐8 revealed an in situ synthesis of zinc hydroxide nitrate nanosheets (100‐ to 150‐nm thickness) with an interplanar distance of 0.97 nm between the layers of zinc hydroxide, Zn5(OH)82+. X‐ray diffraction (XRD) data indicated that benzoate ions replaced nitrate ions (2NO3−) between Zn5(OH)82+ layers leading to an increase in the interplanar distance (from 0.97 nm to 1.9 nm). Zinc hydroxide benzoate nanosheets showed a fast conversion into HPZIF‐8 at room temperature. The concentration of BA and HMTA tuned the porosity of HPZIF‐8, offering a hierarchical micropore–mesopore structure. The prepared materials increased the hydrolysis rate of sodium borohydride. ZIF‐8 and ZIF‐67 prepared using BA showed high catalytic performance in terms of efficiency and reaction time compared with other materials. The result's findings open new avenues for the synthesis of adequate materials for hydrogen generation via the hydrolysis of hydrides.

show abstract

“…It was reported that the solid metal‐based materials are more active catalysts for hydrogen production via hydride hydrolysis. [ 53 ]…”

Section: Resultsmentioning

confidence: 99%

Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Abdelhamid

2021

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…Ni/BN [47] Redox replacement reaction 25 metal NPs with decreased sizes can considerably enhance the efficiency of H 2 production due to the increased accessible active sites. Previous reports have shown that there are many types of supports, consisting of metallic oxides (e.g., Al 2 O 3 , TiO 2 , SiO 2 ), [27][28][29][30] metal foils, or foam materials (e.g., Cu foil, Ni foam), [31,32] or carbon-based materials (e.g., PGO, carbon, NMGC, graphene, NMC, AC, Ketjen carbon, HPC, KB), [33][34][35][36][37][38][39][40][41] p(HEMA), [42] p(SPM), [43] ZIF-8, [44,45] SAG, [46] and BN [47] ). It can be found that catalysts supported on non-noble metal NPs show remarkable improvement in catalytic efficiency.…”

Section: Single Non-noble Metalsmentioning

confidence: 99%

Non‐Noble Metal‐Based Catalysts Applied to Hydrogen Evolution from Hydrolysis of Boron Hydrides

Wang

et al. 2021

Small Structures

View full text Add to dashboard Cite

show abstract

“…Furthermore, it is more economical compared to other noble metal such as Pt, Rh, Ru and Pd that has been previously investigated [3][4][5]. Nevertheless, much work is still necessary to develop Co-based catalyst that is effective as well as stable for industrial use [6].…”

Section: Introductionmentioning

confidence: 99%

Layered double hydroxide supported cobalt nanocluster: size control and the effect in catalytic hydrogen generation

et al. 2021

View full text Add to dashboard Cite

Synthesizing metal nanoclusters with diameters smaller than 5nm is challenging, but desirable because of the high ratio of surface area to interior atom. However, in this report it was achieved by utilizing magnesium-aluminium layered double hydroxide (Mg/Al-LDH) as a host for cobalt citrate anion precursor, which was later reduced into cobalt nanoclusters (Co-NC). Size of the Co-NC was controlled by changing the concentration of cobalt-citrate (Co-citrate) precursor during anion exchange. XRD and FTIR showed that Co-citrate precursor was successfully intercalated on the LDH while nitrogen adsorption/desorption isotherms confirmed that mesopores in the sample were formed after chemical reduction. Furthermore, TEM/STEM observations confirmed the formation of Co-NC. It was also verified that reducing the concentration of Co-citrate from 4mM to 0.5mM resulted in a reduction in the size of Co-NC from 4.4 to 1.3 nm. However, catalytic hydrogen generation from sodium borohydride (NaBH4) hydrolysis experiment indicated that catalytic activity decreased as the size of Co-NC decreases. This is mainly attributed to the limitation in mass transport within the interlamellar space of the smaller cluster LDH compared to the bigger one. Overall, Co-NC-LDH is a promising catalyst for NaBH4 hydrolysis. However, an optimum Co-NC size is critical for enhanced catalytic activity.

show abstract

Stability and kinetic studies of MOF‐derived carbon‐confined ultrafine Co catalyst for sodium borohydride hydrolysis

Cited by 44 publications

References 52 publications

Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Zeolitic imidazolate frameworks (ZIF‐8, ZIF‐67, and ZIF‐L) for hydrogen production

Non‐Noble Metal‐Based Catalysts Applied to Hydrogen Evolution from Hydrolysis of Boron Hydrides

Layered double hydroxide supported cobalt nanocluster: size control and the effect in catalytic hydrogen generation

Contact Info

Product

Resources

About