Unfortunately, it seems there is an error in your request. Be2CO4 is not a valid or known chemical substance. In fact, its chemical structure does not follow the octet rule, a rule that all chemical elements need to adhere to, to form stable compounds.
Be denotes beryllium, a metallic element on the periodic table. CO4 is not a known chemical radical. CO3 (carbonate) and CO2 (carbon dioxide) are two common radicals and compounds of carbon, but CO4 does not exist.
Therefore, it is impossible to provide information about the names, properties, common chemical equations, or methods of preparation for Be2CO4 because this chemical substance does not exist.
If you wish to learn about a specific different chemical substance, please provide the exact name or formula of that substance. We look forward to hearing from you soon.