24bit or better ADC at 10V with at least 100ksps?
If you're feeding this to a MCU or similar, I would use a basic resistor voltage divider to cut the 0-10 V to 0-5 V or similar.  I might pad the range a little to avoid saturation near the top-end due to tolerances, and maybe add some clamping diodes depending on the application.  Many MCUs are capable of 100 ksps nowadays, some DSPICs can even do 1 Msps.
Random anecdote: One of my first PCBs I had made as an intern was a big resistor divider array for our test engineers who had to connect automotive analog stuff (0 V to BATT; 9 to 16 volts) to their 0-5 V DAQs.
Additions
24-bit @ 100 ksps...not doable with any MCU (I know of).  You can use oversampling and decimation to hit 24 bits, but you take an effective 4x sample rate hit per bit of increased resolution.
I don't know about your application, but I might try to cheat and go with a 96 ksps rate.  96 kHz audio is fairly common nowadays, so it might be easier/cheaper to get an ADC for that.
Possible parts available @ DK:

Cirrus Logic CS5343-CZZ - IC ADC AUD 98DB 108KHZ 10-TSSOP (Cirrus has a few others, CS5346-CQZ, CS53L21-CNZ)
Analog Devices AD1974YSTZ-ND - IC ADC 4CH W/ON-CHIP PLL 48LQFP
Texas Inst. PCM1808PWR - IC ADC 24BIT STER 96KHZ 14-TSSOP

In any case, regardless of the IC, halving the range per bit with a voltage divider is a very clean and basic method, almost assuredly lower noise than passing through any demultiplexer.