Patent · US Active

Process for producing liquid polysilanes and isomer enriched higher silanes

US11377359B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

Grigory Nikiforov · Bound Brook, US
Guillaume Husson · Newark, US
Gennadiy Itov · Flemington, US
Yang Wang · Shanghai, CN

Key dates

Filing date	Mar 23, 2020
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Jun 13, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Synthesis of silanes with more than three silicon atoms are disclosed (i.e., SinH(2n+2) with n=4-100). More particularly, the disclosed synthesis methods tune and optimize the isomer ratio by selection of process parameters such as temperature, residence time, and the relative amount of starting compounds, as well as selection of proper catalyst. The disclosed synthesis methods allow facile preparation of silanes containing more than three silicon atoms and particularly, the silanes containing preferably one major isomer. The pure isomers and isomer enriched mixtures are prepared by catalytic transformation of silane (SiH4), disilane (Si2H6), trisilane (Si3H8), and mixtures thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.