当前位置: X-MOL 学术Synth. Met. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis of a cobalt catalyst supported by graphene oxide modified perlite and its application on the hydrolysis of sodium borohydride
Synthetic Metals ( IF 4.4 ) Pub Date : 2024-04-17 , DOI: 10.1016/j.synthmet.2024.117621
Erhan ONAT

In this work, a novel catalyst for the hydrolysis reaction of sodium borohydride to produce hydrogen—graphene oxide modified perlite supported cobalt—was produced. After being exposed to 98 % HSO, the natural mineral perlite was calcined and then mixed with graphene oxide. To create the Co@Perlite-GO catalyst, the synthesized Perlite-GO was added to the cobalt catalyst as a supporting material. The morphological layout and nature of the sample were evaluated using different spectroscopic techniques. Comparative analysis was carried out to investigate the catalytic effects of Co@Perlite-GO and Co@Perlite catalysts on the sodium borohydride (SBH) hydrolysis reaction. When the Co@Perlite-GO catalyst containing 4 mg Co was utilized, the hydrogen production rate was 12401 ml g min as a consequence of the optimization procedures carried out at 298 K. Under room conditions, the reaction occurred as catalyst control (0th degree), and the standard turnover frequency (TOF) was measured to be 8615 s. The activation energy, enthalpy, and entropy of the reaction were measured as 53.35 kJ mol, 50.77 kJ mol, and −58 J/(mol.K) respectively. It was found that the catalyst maintained 100 % efficiency even after being used six times.

中文翻译:

氧化石墨烯改性珍珠岩负载钴催化剂的合成及其在硼氢化钠水解中的应用

在这项工作中,生产了一种用于硼氢化钠水解反应制氢的新型催化剂——氧化石墨烯改性珍珠岩负载钴。将天然矿物珍珠岩暴露于 98% HSO 后进行煅烧,然后与氧化石墨烯混合。为了制造 Co@Perlite-GO 催化剂,将合成的珍珠岩-GO 添加到钴催化剂中作为支撑材料。使用不同的光谱技术评估样品的形态布局和性质。通过比较分析研究Co@Perlite-GO和Co@Perlite催化剂对硼氢化钠(SBH)水解反应的催化效果。当使用含有 4 mg Co 的 Co@Perlite-GO 催化剂时,由于在 298 K 下进行的优化程序,氢气生产率为 12401 ml g min。在室温条件下,反应发生在催化剂控制(0 度)下。 ),标准周转频率(TOF)测得为 8615 秒。测得反应的活化能、焓和熵分别为53.35 kJ mol、50.77 kJ mol和-58 J/(mol.K)。结果发现,该催化剂即使使用六次后仍保持100%的效率。
更新日期:2024-04-17
down
wechat
bug