Table 5. Summary of Catalysis Studies Using Porous BN as a Catalyst, Showing the Type of Catalysis, the Targeted Reaction, and Some of the Key Performance Indicatorsa.
Heterogeneous catalysis | ||
---|---|---|
reaction studied | reaction conditions | reactant mixture |
oxidative dehydrogenation of alkanes | 460–490 °C | multiple ratios |
alkane:O2:N2 | ||
methane oxidation | 690–720 °C | 2:1:4 |
methane:O2:N2 | ||
styrene epoxidation | 80 °C | 26.5 mmol of t-butyl hydroperoxide |
25 mL of acetonitrile | ||
10 mmol of styrene | ||
aerobic oxidative desulfurization | 150 °C | 40 mL of oil (500 ppm of dibenzothiophene) |
acetylene hydrochlorination | 200–280 °C | 1:1–1:2 |
HCl:acetylene |
Photocatalysis | |||||
---|---|---|---|---|---|
reaction | reaction phase | irradiation range | light source | sacrificial agent | production rate |
H2 generation | liquid | 200–2500 nm | 300 W Xe lamp | triethanolamine | 3.6–47.1 μmol H2g–1 h–1 |
CO2 photoreduction | gas | >300 nm | 300 W Xe lamp | H2O | 0.2–12.5 μmol CO g–1 h–1 |
H2 | 1.5 μmol H2 h–1 | ||||
3.3 μmol H2g–1 h–1 |
Electrocatalysis | |||||
---|---|---|---|---|---|
reaction | catalyst | formation rate | solution | faradaic efficiency/electron transfer number | time/durability |
N2 fixation to NH3 | h-BNNS | 18.2–22.4 μg NH3 h–1 mgcat–1 | 0.1 M HCl | 4.7–5.5%@–0.70–0.75 V vs relative hydrogen electrode | 2 h |
porous BN | 0.1 M Na2SO4 | ||||
oxygen reduction reaction | Pt/porous BN | <0.6% H2O2 | 0.1 M HClO4 | >3.99 electrons | 10000 cycles for specific conditions |
BN nanotubes | 0.5 M H2SO2 | ||||
BNNS | |||||
sputter-deposited BN |
Full details in the Supporting Information, Table S5.